FCC ID: RAS-MT7921K 2TX 11ax (WiFi6E) +BT/BLE Combo Card

 

MT7921K Install User Guideline Version:

Release Date:

V0. 5 2021-12-30 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. Specifications are subject to change without notice. MT7921K Install User Guideline: Part-I Confidential B Document Revision History Version Date Author Change List Initial draft release. Added antenna set 4 information RFMTA311020EMMB301_V02 Added antenna set 5 information JR2Q00340-1 Added antenna set 6, 7 information LA9RF059-CS-H, 14008-02650500 Added antenna set 8, 9 20201214 20210109 20210527 20210713 20211230 Jane Jane V0.1 V0.2 V0.3 V0.4 V0.5 MediaTek Confidential Page 2 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. Me dia Tek Co nfid enti al A MT7921K Install User Guideline: Part-I Confidential B Table of Contents Document Revision History ........................................................................................................................ 2 Table of Contents ...................................................................................................................................... 3 1 System overview ............................................................................................................................. 4 1.1 General Description ................................................................................................................ 4 2 Driver install ................................................................................................................................... 5 2.1 How to install driver ............................................................................................................... 5 2.1.1 Windows Security for new signature mechanism ...................................................... 6 2.1.2 Windows 10 install note ......................................................................................... 7 2.1.3 Install Windows driver ............................................................................................ 8 3 General Information & Integration Instructions ..................................................................... 11 3.1 General Description of MT7921K ...................................................................................... 11 3.2 Antenna information .......................................................................................................... 12 3.3 Host Integration instructions .............................................................................................. 14 3.4 Host product testing guidance ........................................................................................... 14 MediaTek Confidential Page 3 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B System overview 1.1 General Description MT7921K chip is highly integrated single chip which have built in 2x2 dual-band wireless LAN and Bluetooth combo radio. WiFi works on the ISM band, which means many other devices such as microwave oven, radar, and Bluetooth use the same frequencies and channels with WiFi devices. Therefore, governments make regulations to avoid interference between devices. The specifications include usable channels, scan rule, and transmit power. MediaTek Confidential Page 4 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. 1 2 Driver install MT7921K Install User Guideline: Part-I Confidential B 2.1 How to install driver Please follow the procedure listed in below to install driver 1st : Update Windows security package to register signature mechanism 2nd : Install Windows driver. MediaTek Confidential Page 5 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.1.1 Windows Security for new signature mechanism If you are the 1st time to use this driver, you should update Windows Security for new signature mechanism at first. Please follow below link to install this software. https://www.microsoft.com/en-us/download/details.aspx?id=46148 For windows 7 x64 example:

MediaTek Confidential Page 6 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.1.2 Windows 10 install note check to allow installation. If manufacturer cant install the driver in Windows 10 due to driver integrity check, try to disable the integrity Disable Driver Integrity Check 1. Open cmd as Administrator. 2. Execute bcdedit /set nointegritychecks on 3. Reboot 4. Then install again. If still fail, try do Disable Secure Boot below. NOTE: Re-enable the driver integrity check by executing bcdedit /set nointegritychecks off and then rebooting. Disable Secure Boot Please refer to:

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/disabling-secure-boot MediaTek Confidential Page 7 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.1.3 Install Windows driver to install Windows driver:

PCIE interface:

MT7921K supports PCIE interface. According to interface type of MT7921K, please refer to steps shown below 1. Connect DUT to PC/NB and check Windows Device Manager. 2. Window Device Manager would discover DUT shows Generic Bluetooth Adapter(BT device) and WiFi_If(WiFi device). 3. Right click the Generic Bluetooth Adapter BT device and select disable as follows. MediaTek Confidential Page 8 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 4. Right-click on WiFi_If Wifi device and Update Driver Software. a c 5. According hosts Windows OS to select and install driver. b f e g d MediaTek Confidential Page 9 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B MediaTek Confidential Page 10 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. h MT7921K Install User Guideline: Part-I Confidential B 3 General Information & Integration Instructions 3.1 General Description of MT7921K 2TX 11ax (WiFi6E) + BT/BLE Combo Card Product Brand Model MediaTek MT7921K Power Supply Rating 3.3Vdc from host equipment GFSK, /4-DQPSK, 8DPSK for FHSS CCK, DQPSK, DBPSK for DSSS 64QAM, 16QAM, QPSK, BPSK for OFDM 256QAM for OFDM in 11ac mode and VHT20/40 in 2.4GHz 1024QAM for OFDMA in 11ax HE mode Modulation Type Modulation Technology Transfer Rate BT EDR: FHSS BT LE: GFSK WLAN: DSSS, OFDM, OFDMA BT EDR: up to 3 Mbps BT LE: up to 2 Mbps 802.11b: up to 11 Mbps 802.11a/g: up to 54 Mbps 802.11n: up to 300 Mbps 802.11ac: up to 866.7 Mbps 802.11ax: up to 1201.0 Mbps Operating Frequency BT EDR: 2402MHz ~ 2480MHz BT LE 1M: 2402MHz ~ 2480MHz BT LE 2M: 2404MHz ~ 2478MHz 2.4GHz: 2.412 ~ 2.472GHz 5GHz: 5.18~5.32GHz, 5.50~5.72GHz, 5.745 ~ 5.825GHz 6GHz: 5.955 ~ 6.415GHz, 6.435 ~ 6.525GHz, 6.525 ~ 6.875GHz, 6.875 ~ 7.115GHz Number of Channel BT EDR: 79 BT LE: 40 2.4GHz:

802.11b, 802.11g, 802.11n (HT20), VHT20, 802.11ax (HE20): 13 802.11n (HT40), VHT40, 802.11ax (HE40): 9 5GHz:

802.11a, 802.11n (HT20), 802.11ac (VHT20), 802.11ax (HE20): 25 802.11n (HT40), 802.11ac (VHT40), 802.11ax (HE40): 12 802.11ac (VHT80), 802.11ax (HE80): 6 6GHz:

802.11ax (HE20): 59 802.11ax (HE40): 29 802.11ax (HE80): 14 MediaTek Confidential Page 11 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. 3.2 MT7921K Install User Guideline: Part-I Confidential B Antenna information The antennas mentioned below are covered in the certification scope and the HOST can only be used with the following antennas:

MediaTek Confidential Page 12 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B Please note that the above antennas are custom made for MediaTek MT7921K module and are not listed in Walsin Technology Corp standard catalogs. For the purchase of these antennas, please contact Walsin Technology as listed below directly. Only the above antennas are tested for compliance with the FCC rules, and all other antennas (even same type with lower gain) will require a re-assessment to be used with this module. Contact info for above certified antennas:

Company/Dept.: Walsin Technology Corp./ Antenna Business Dept. Contact window: Andrew Lin Tel: +886-3-475-8711 # 8172 Cell phone: +886-938-286-596 Email address: andrewlin@passivecomponent.com URL link: http://www.passivecomponent.com/zh-hant/products/antenna/

MediaTek Confidential Page 13 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B Host Integration instructions The product is designed to be used with NGFF (Next Generation Form Factor) M.2 2230 PCIE Bus, please install module into a M.2 2230 PCIE slot. 3.4 Host product testing guidance HOST must follow the specific restrictions listed in 3.5 Regulatory notes section below and section 3 of KDB996369 D04 V02 Module Integration Guide v01, to verify that the host product meets all the applicable rules. MediaTek Confidential Page 14 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. 3.3 3.5 MT7921K Install User Guideline: Part-I Confidential B Regulatory notes Federal Communication Commission Interference Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

- Reorient or relocate the receiving antenna.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device meets all the other requirements specified in Part 15E, Section 15.407 of the FCC Rules. Increase the separation between the equipment and receiver. Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. MediaTek Confidential Page 15 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B This module is intended for OEM integrators only. Per FCC KDB 996369 D03 OEM Manual v01 guidance, the following conditions must be strictly followed when using this certified module:

KDB 996369 D03 OEM Manual v01 rule sections:

2.2 List of applicable FCC rules This module has been tested for compliance to FCC Part 15 Subpart C (15.247) and Subpart E

(15.407). Device is tested for compliance as a low power indoor client device within 5.9257.125 GHz band. 2.3 Summarize the specific operational use conditions The module is tested for standalone mobile RF exposure use condition. Any other usage conditions such as co-location with other transmitter(s) will need a separate reassessment through a class II permissive change application or new certification. This module is authorized for Low Power Indoor Client applications only; final host product must be for indoor operations only. Further operation restrictions on the host product include:

*Prohibited for control of or Communications with unmanned aircraft systems. 2.4 Limited module procedures Not applicable. 2.5 Trace antenna designs Not applicable. 2.6 RF exposure considerations This equipment complies with FCC mobile radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. A separate SAR/Power Density evaluation is required to confirm compliance with relevant FCC portable RF exposure rules. MediaTek Confidential Page 16 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.7 Antennas The following antennas have been certified for use with this module. MediaTek Confidential Page 17 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B Note1: Use of other antenna types or the same type of antenna with higher gain than listed above must performed additional testing and appropriate permissive change approval. Note2: In the 5.925-7.125GHz band, use of other similar type antennas and the antenna gain not higher/lower than listed above may only require a C1PC without any additional testing/submission. Note3: Additional testing/submission (C2PC) will required if device not met the antenna and RF exposure requirements. Note4: Contact MTK for additional guidance, if choose to use different antenna types or higher/lower gain antennas in the end system. IMPORTANT: The final host product must have an integral antenna which is not removable by the end-user. 2.8 Label and compliance information The final end product must be labeled in a visible area with the following: Contains FCC ID:

RAS-MT7921K. The grantee's FCC ID can be used only when all FCC compliance requirements are met. 2.9 Information on test modes and additional testing requirements This transmitter is tested in a standalone mobile RF exposure condition and any co-located or simultaneous transmission with other transmitter(s) class II permissive change re-evaluation or new certification. MediaTek Confidential 2022 MediaTek Inc. Page 18 of 19 This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.10 Additional testing, Part 15 Subpart B disclaimer This transmitter module is tested as a subsystem and its certification does not cover the FCC Part 15 Subpart B (unintentional radiator) rule requirement applicable to the final host. The final host will still need to be reassessed for compliance to this portion of rule requirements if applicable. As long as all conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed. IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product

(including the transmitter) and obtaining a separate FCC authorization. Manual Information To the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the users manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. OEM/Host manufacturer responsibilities OEM/Host manufacturers are ultimately responsible for the compliance of the Host and Module. The final product must be reassessed against all the essential requirements of the FCC rule such as FCC Part 15 Subpart B before it can be placed on the US market. This includes reassessing the transmitter module for compliance with the Radio and EMF essential requirements of the FCC rules. This module must not be incorporated into any other device or system without retesting for compliance as multi-radio and combined equipment. MediaTek Confidential Page 19 of 19 2022 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

 

 

MT7921K Install User Guideline

Version:

Release Date:

V0. 2

2021-01-09

© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

Specifications are subject to change without notice.

MT7921K

Install User Guideline: Part-I

Confidential B

Version

Date

Author

Change List

V0.1

V0.2

20201214

20210109

Jane

Jane

Initial draft release.

Added antenna set 4 information – “ RFMTA311020EMMB301_V02”

Document Revision History

MediaTek Confidential

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© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

Me

dia

Tek

Co

nfid

enti

al A

MT7921K

Install User Guideline: Part-I

Confidential B

Table of Contents

Document Revision History ........................................................................................................................ 2

Table of Contents ...................................................................................................................................... 3

1

System overview ............................................................................................................................. 4

1.1 General Description ................................................................................................................ 4

2

Driver install ................................................................................................................................... 5

2.1 How to install driver ............................................................................................................... 5

2.1.1

Windows Security for new signature mechanism ...................................................... 6

2.1.2

Windows 10 install note ......................................................................................... 7

2.1.3

Install Windows driver ............................................................................................ 8

3

General Information & Integration Instructions ..................................................................... 11

3.1 General Description of MT7921K ...................................................................................... 11

3.2 Antenna information .......................................................................................................... 12

3.3 Host Integration instructions .............................................................................................. 13

3.4 Host product testing guidance ........................................................................................... 13

MediaTek Confidential

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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

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Confidential B

System overview

1.1

General Description

MT7921K chip is highly integrated single chip which have built in 2x2 dual-band wireless LAN and Bluetooth

combo radio. WiFi works on the ISM band, which means many other devices such as microwave oven, radar, and

Bluetooth use the same frequencies and channels with WiFi devices.

Therefore, governments make regulations to avoid interference between devices. The specifications include

usable channels, scan rule, and transmit power.

MediaTek Confidential

Page 4 of 17

© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

1



2

Driver install

MT7921K

Install User Guideline: Part-I

Confidential B

2.1

How to install driver

Please follow the procedure listed in below to install driver

 1st : Update Windows security package to register signature mechanism

 2nd : Install Windows driver.

MediaTek Confidential

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This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

Confidential B

2.1.1

Windows Security for new signature mechanism

If you are the 1st time to use this driver, you should update Windows Security for new signature mechanism at

first. Please follow below link to install this software.

https://www.microsoft.com/en-us/download/details.aspx?id=46148

For windows 7 x64 example:

MediaTek Confidential

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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

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2.1.2

Windows 10 install note

check to allow installation.

If manufacturer can’t install the driver in Windows 10 due to driver integrity check, try to disable the integrity

 Disable Driver Integrity Check

1. Open cmd as Administrator.

2. Execute ‘bcdedit /set nointegritychecks on’

3. Reboot

4. Then install again. If still fail, try do ‘Disable Secure Boot’ below.

NOTE: Re-enable the driver integrity check by executing ‘bcdedit /set nointegritychecks off’ and then

rebooting.

 Disable Secure Boot

Please refer to:

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/disabling-secure-boot

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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

Confidential B

2.1.3

Install Windows driver

to install Windows driver:

PCIE interface:

MT7921K supports PCIE interface. According to interface type of MT7921K, please refer to steps shown below

1. Connect DUT to PC/NB and check Windows Device Manager.

2. Window Device Manager would discover DUT shows “Generic Bluetooth Adapter”(BT device) and

“WiFi_If”(WiFi device).

3. Right click the “Generic Bluetooth Adapter” BT device and select disable as follows.

MediaTek Confidential

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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

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4. Right-click on “WiFi_If” Wifi device and Update Driver Software.

a

c

5. According host’s Windows’ OS to select and install driver.

b

f

e

g

d

MediaTek Confidential

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This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

Confidential B

MediaTek Confidential

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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

h

MT7921K

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Confidential B

3

General Information & Integration Instructions

3.1

General Description of MT7921K

2TX 11ax (WiFi6E) + BT/BLE Combo Card

Product

Brand

Model

MediaTek

MT7921K

Power Supply Rating

3.3Vdc from host equipment

GFSK, π/4-DQPSK, 8DPSK for FHSS

CCK, DQPSK, DBPSK for DSSS

64QAM, 16QAM, QPSK, BPSK for OFDM

256QAM for OFDM in 11ac mode and VHT20/40 in 2.4GHz

1024QAM for OFDMA in 11ax HE mode

Modulation Type

Modulation Technology

Transfer Rate

BT EDR: FHSS

BT LE: GFSK

WLAN: DSSS, OFDM, OFDMA

BT EDR: up to 3 Mbps

BT LE: up to 2 Mbps

802.11b: up to 11 Mbps

802.11a/g: up to 54 Mbps

802.11n: up to 300 Mbps

802.11ac: up to 866.7 Mbps

802.11ax: up to 1201.0 Mbps

Operating Frequency

BT EDR: 2402MHz ~ 2480MHz

BT LE 1M: 2402MHz ~ 2480MHz

BT LE 2M: 2404MHz ~ 2478MHz

2.4GHz: 2.412 ~ 2.472GHz

5GHz: 5.18~5.32GHz, 5.50~5.72GHz, 5.745 ~ 5.825GHz

6GHz: 5.955 ~ 6.415GHz, 6.435 ~ 6.525GHz, 6.525 ~ 6.875GHz, 6.875 ~ 7.115GHz

Number of Channel

BT EDR: 79

BT LE: 40

2.4GHz:

802.11b, 802.11g, 802.11n (HT20), VHT20, 802.11ax (HE20): 13

802.11n (HT40), VHT40, 802.11ax (HE40): 9

5GHz:

802.11a, 802.11n (HT20), 802.11ac (VHT20), 802.11ax (HE20): 25

802.11n (HT40), 802.11ac (VHT40), 802.11ax (HE40): 12

802.11ac (VHT80), 802.11ax (HE80): 6

6GHz:

802.11ax (HE20): 59

802.11ax (HE40): 29

802.11ax (HE80): 14

MediaTek Confidential

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Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

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3.2

1

2

3

4

Antenna information

The antennas mentioned below are covered in the certification scope and the HOST can only be used with

the following antennas:

Ant.

Set

RF Chain No. Brand

Model

Freq. Range

(GHz)

Ant.

Type

Connector

Type

Ant. Net

Gain

(dBi)

Chain0

Cortec AN2450-4902BRS

Dipole

R-SMA

Chain1

Cortec AN2450-4902BRS

Dipole

R-SMA

Cable

Length

(mm)

150

150

Cable Loss (dB)

2.4~2.4835GHz : 0.5

5.15~5.85GHz : 0.8

2.4~2.4835GHz : 0.5

5.15~5.85GHz : 0.8

Excluding

Cable Loss

Ant. Gain

(dBi)

2.92

4.67

2.92

4.67

Chain0

PSA

Chain1

PSA

Chain0

PSA

RFMTA340718EML

B302

RFMTA340718EML

B302

RFMTA311020EMM

B301

Chain1

PSA

RFMTA311020EMM

B301

PIFA

i-pex(MHF)

200

included cable loss

PIFA

i-pex(MHF)

200

included cable loss

PIFA

i-pex(MHF)

200

PIFA

i-pex(MHF)

200

Chain0

PSA

RFMTA311020EMM

B301_V02

PIFA

i-pex(MHF)

200

-

-

-

-

-

-

-

-

-

-

2.42

3.87

2.42

3.87

3.18

4.92

3.18

4.92

1.71

4.82

3.31

1.71

4.82

3.31

1.71

4.82

4.76

4.29

4.61

4.09

1.71

4.82

4.76

4.29

4.61

4.09

2.4~2.4835

5.15~5.85

2.4~2.4835

5.15~5.85

2.4~2.4835

5.15~5.85

2.4~2.4835

5.15~5.85

2.4~2.4835

5.15~5.85

5.92~7.125

2.4~2.4835

5.15~5.85

5.92~7.125

2.4~2.4835

5.15~5.85

5.925~6.425

6.425~6.525

6.525~6.875

6.875~7.125

2.4~2.4835

5.15~5.85

5.925~6.425

6.425~6.525

6.525~6.875

6.875~7.125

Chain1

PSA

RFMTA311020EMM

B301_V02

PIFA

i-pex(MHF)

200

Please note that the above antennas are custom made for MediaTek MT7921K module and are not listed in

Walsin Technology Corp standard catalogs. For the purchase of these antennas, please contact Walsin

Technology as listed below directly. Only the above antennas are tested for compliance with the FCC rules,

and all other antennas (even same type with lower gain) will require a re-assessment to be used with this

module.

Contact info for above certified antennas:

Company/Dept.: Walsin Technology Corp./ Antenna Business Dept.

Contact window: Andrew Lin

Tel: +886-3-475-8711 # 8172

Cell phone: +886-938-286-596

Email address: andrewlin@passivecomponent.com

URL link: http://www.passivecomponent.com/zh-hant/products/antenna/

MediaTek Confidential

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© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

Confidential B

Host Integration instructions

The product is designed to be used with “NGFF (Next Generation Form Factor) M.2 2230” PCIE Bus, please

install module into a M.2 2230 PCIE slot.

3.4

Host product testing guidance

HOST must follow the specific restrictions listed in “3.5 Regulatory notes” section below and section 3 of

KDB996369 D04 V02 Module Integration Guide v01, to verify that the host product meets all the applicable

rules.

MediaTek Confidential

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This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

3.3



3.5

MT7921K

Install User Guideline: Part-I

Confidential B

Regulatory notes

Federal Communication Commission Interference Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) This device may not cause harmful interference, and (2) this device must accept

any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable

protection against harmful interference in a residential installation. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and used in accordance with

the instructions, may cause harmful interference to radio communications. However, there is

no guarantee that interference will not occur in a particular installation. If this equipment does

cause harmful interference to radio or television reception, which can be determined by turning

the equipment off and on, the user is encouraged to try to correct the interference by one of the

following measures:

- Reorient or relocate the receiving antenna.

-

- Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

- Consult the dealer or an experienced radio/TV technician for help.

FCC Caution: Any changes or modifications not expressly approved by the party responsible for

compliance could void the user's authority to operate this equipment.

This transmitter must not be co-located or operating in conjunction with any other antenna or

transmitter.

This device meets all the other requirements specified in Part 15E, Section 15.407 of the FCC

Rules.

Increase the separation between the equipment and receiver.

Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with minimum distance 20cm

between the radiator & your body.

MediaTek Confidential

Page 14 of 17

© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

Confidential B

This module is intended for OEM integrators only. Per FCC KDB 996369 D03 OEM Manual

v01 guidance, the following conditions must be strictly followed when using this certified

module:

KDB 996369 D03 OEM Manual v01 rule sections:

2.2 List of applicable FCC rules

This module has been tested for compliance to FCC Part 15 Subpart C (15.247) and Subpart E

(15.407). Device is tested for compliance as a low power indoor client device within 5.925–7.125

GHz band.

2.3 Summarize the specific operational use conditions

The module is tested for standalone mobile RF exposure use condition. Any other usage

conditions such as co-location with other transmitter(s) will need a separate reassessment

through a class II permissive change application or new certification.

This module is authorized for Low Power Indoor Client applications only; final host product must

be for indoor operations only.

Further operation restrictions on the host product include:

*Prohibited for control of or Communications with unmanned aircraft systems.

2.4 Limited module procedures

Not applicable.

2.5 Trace antenna designs

Not applicable.

2.6 RF exposure considerations

This equipment complies with FCC mobile radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with a minimum distance of 20cm

between the radiator & your body. A separate SAR/Power Density evaluation is required to

confirm compliance with relevant FCC portable RF exposure rules.

MediaTek Confidential

Page 15 of 17

© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

Confidential B

2.7 Antennas

The following antennas have been certified for use with this module; antennas of the same

type with equal or lower gain may also be used with this module except for operations within

the 5.925~7.125GHz band. Use of any other antenna with a lower or higher gain in this

band will require a separate reassessment through a Class II Permissive Change

application or new certification.

2.8 Label and compliance information

The final end product must be labeled in a visible area with the following: “Contains FCC ID:

RAS-MT7921K”. The grantee's FCC ID can be used only when all FCC compliance

requirements are met.

MediaTek Confidential

Page 16 of 17

© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

MT7921K

Install User Guideline: Part-I

Confidential B

2.9 Information on test modes and additional testing requirements

This transmitter is tested in a standalone mobile RF exposure condition and any co-located or

simultaneous transmission with other transmitter(s) class II permissive change re-evaluation or

new certification.

2.10 Additional testing, Part 15 Subpart B disclaimer

This transmitter module is tested as a subsystem and its certification does not cover the FCC

Part 15 Subpart B (unintentional radiator) rule requirement applicable to the final host. The final

host will still need to be reassessed for compliance to this portion of rule requirements if

applicable.

As long as all conditions above are met, further transmitter test will not be required. However,

the OEM integrator is still responsible for testing their end-product for any additional compliance

requirements required with this module installed.

IMPORTANT NOTE: In the event that these conditions can not be met (for example certain

laptop configurations or co-location with another transmitter), then the FCC authorization is no

longer considered valid and the FCC ID can not be used on the final product. In these

circumstances, the OEM integrator will be responsible for re-evaluating the end product

(including the transmitter) and obtaining a separate FCC authorization.

Manual Information To the End User

The OEM integrator has to be aware not to provide information to the end user regarding how to

install or remove this RF module in the user’s manual of the end product which integrates this

module.

The end user manual shall include all required regulatory information/warning as show in this

manual.

OEM/Host manufacturer responsibilities

OEM/Host manufacturers are ultimately responsible for the compliance of the Host and Module.

The final product must be reassessed against all the essential requirements of the FCC rule

such as FCC Part 15 Subpart B before it can be placed on the US market. This includes

reassessing the transmitter module for compliance with the Radio and EMF essential

requirements of the FCC rules. This module must not be incorporated into any other device or

system without retesting for compliance as multi-radio and combined equipment.

MediaTek Confidential

Page 17 of 17

© 2020 - 2021 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc.

Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.



 

 

MT7921K Install User Guideline Version:

Release Date:

V0. 4 2021-07-13 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. Specifications are subject to change without notice. MT7921K Install User Guideline: Part-I Confidential B Document Revision History V0.1 V0.2 V0.3 V0.4 20201214 20210109 20210527 20210713 Jane Jane Version Date Author Change List Initial draft release. Added antenna set 4 information RFMTA311020EMMB301_V02 Added antenna set 5 information JR2Q00340-1 Added antenna set 6, 7 information LA9RF059-CS-H, 14008-02650500 MediaTek Confidential Page 2 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B Table of Contents Document Revision History ........................................................................................................................ 2 Table of Contents ...................................................................................................................................... 3 1 System overview ............................................................................................................................. 4 1.1 General Description ................................................................................................................ 4 2 Driver install ................................................................................................................................... 5 2.1 How to install driver ............................................................................................................... 5 2.1.1 Windows Security for new signature mechanism ...................................................... 6 2.1.2 Windows 10 install note ......................................................................................... 7 2.1.3 Install Windows driver ............................................................................................ 8 3 General Information & Integration Instructions ..................................................................... 11 3.1 General Description of MT7921K ...................................................................................... 11 3.2 Antenna information .......................................................................................................... 12 3.3 Host Integration instructions .............................................................................................. 14 3.4 Host product testing guidance ........................................................................................... 14 MediaTek Confidential Page 3 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B System overview 1.1 General Description MT7921K chip is highly integrated single chip which have built in 2x2 dual-band wireless LAN and Bluetooth combo radio. WiFi works on the ISM band, which means many other devices such as microwave oven, radar, and Bluetooth use the same frequencies and channels with WiFi devices. Therefore, governments make regulations to avoid interference between devices. The specifications include usable channels, scan rule, and transmit power. MediaTek Confidential Page 4 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. 1 2 Driver install MT7921K Install User Guideline: Part-I Confidential B 2.1 How to install driver Please follow the procedure listed in below to install driver 1st : Update Windows security package to register signature mechanism 2nd : Install Windows driver. MediaTek Confidential Page 5 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.1.1 Windows Security for new signature mechanism If you are the 1st time to use this driver, you should update Windows Security for new signature mechanism at first. Please follow below link to install this software. https://www.microsoft.com/en-us/download/details.aspx?id=46148 For windows 7 x64 example:

MediaTek Confidential Page 6 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.1.2 Windows 10 install note check to allow installation. If manufacturer cant install the driver in Windows 10 due to driver integrity check, try to disable the integrity Disable Driver Integrity Check 1. Open cmd as Administrator. 2. Execute bcdedit /set nointegritychecks on 3. Reboot 4. Then install again. If still fail, try do Disable Secure Boot below. NOTE: Re-enable the driver integrity check by executing bcdedit /set nointegritychecks off and then rebooting. Disable Secure Boot Please refer to:

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/disabling-secure-boot MediaTek Confidential Page 7 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.1.3 to install Windows driver:

PCIE interface:

WiFi_If(WiFi device). Install Windows driver MT7921K supports PCIE interface. According to interface type of MT7921K, please refer to steps shown below 1. Connect DUT to PC/NB and check Windows Device Manager. 2. Window Device Manager would discover DUT shows Generic Bluetooth Adapter(BT device) and 3. Right click the Generic Bluetooth Adapter BT device and select disable as follows. MediaTek Confidential Page 8 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 4. Right-click on WiFi_If Wifi device and Update Driver Software. 5. According hosts Windows OS to select and install driver. f e b d g MediaTek Confidential Page 9 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. a c MT7921K Install User Guideline: Part-I Confidential B MediaTek Confidential Page 10 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. h MT7921K Install User Guideline: Part-I Confidential B 3 General Information & Integration Instructions 3.1 General Description of MT7921K 2TX 11ax (WiFi6E) + BT/BLE Combo Card Product Brand Model MediaTek MT7921K Power Supply Rating 3.3Vdc from host equipment GFSK, /4-DQPSK, 8DPSK for FHSS CCK, DQPSK, DBPSK for DSSS 64QAM, 16QAM, QPSK, BPSK for OFDM 256QAM for OFDM in 11ac mode and VHT20/40 in 2.4GHz 1024QAM for OFDMA in 11ax HE mode Modulation Type Modulation Technology Transfer Rate BT EDR: FHSS BT LE: GFSK WLAN: DSSS, OFDM, OFDMA BT EDR: up to 3 Mbps BT LE: up to 2 Mbps 802.11b: up to 11 Mbps 802.11a/g: up to 54 Mbps 802.11n: up to 300 Mbps 802.11ac: up to 866.7 Mbps 802.11ax: up to 1201.0 Mbps Operating Frequency BT EDR: 2402MHz ~ 2480MHz BT LE 1M: 2402MHz ~ 2480MHz BT LE 2M: 2404MHz ~ 2478MHz 2.4GHz: 2.412 ~ 2.472GHz 5GHz: 5.18~5.32GHz, 5.50~5.72GHz, 5.745 ~ 5.825GHz 6GHz: 5.955 ~ 6.415GHz, 6.435 ~ 6.525GHz, 6.525 ~ 6.875GHz, 6.875 ~ 7.115GHz Number of Channel BT EDR: 79 BT LE: 40 2.4GHz:

802.11b, 802.11g, 802.11n (HT20), VHT20, 802.11ax (HE20): 13 802.11n (HT40), VHT40, 802.11ax (HE40): 9 5GHz:

802.11a, 802.11n (HT20), 802.11ac (VHT20), 802.11ax (HE20): 25 802.11n (HT40), 802.11ac (VHT40), 802.11ax (HE40): 12 802.11ac (VHT80), 802.11ax (HE80): 6 6GHz:

802.11ax (HE20): 59 802.11ax (HE40): 29 802.11ax (HE80): 14 MediaTek Confidential Page 11 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B Antenna information The antennas mentioned below are covered in the certification scope and the HOST can only be used with the following antennas:

Ant. Set RF Chain No. Brand Model Freq. Range

(GHz) Ant. Type Connector Type Ant. Net Gain

(dBi) Chain0 Cortec AN2450-4902BRS Dipole R-SMA Chain1 Cortec AN2450-4902BRS Dipole R-SMA Cable Length

(mm) 150 150 Cable Loss (dB) 2.4~2.4835GHz : 0.5 5.15~5.85GHz : 0.8 2.4~2.4835GHz : 0.5 5.15~5.85GHz : 0.8 Excluding Cable Loss Ant. Gain

(dBi) 2.92 4.67 2.92 4.67 Chain0 PSA Chain1 PSA Chain0 PSA RFMTA340718EML B302 RFMTA340718EML B302 RFMTA311020EMM B301 Chain1 PSA RFMTA311020EMM B301 PIFA i-pex(MHF) 200 included cable loss PIFA i-pex(MHF) 200 included cable loss PIFA i-pex(MHF) 200 PIFA i-pex(MHF) 200 2.42 3.87 2.42 3.87 3.18 4.92 3.18 4.92 1.71 4.82 3.31 1.71 4.82 3.31 1.71 4.82 4.76 4.29 4.61 4.09 1.71 4.82 4.76 4.29 4.61 4.09 1.62 3.2 3.93 3.61 3.61 3.14 1.62 3.2 3.93 3.61 3.61 3.14 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 5.92~7.125 2.4~2.4835 5.15~5.85 5.92~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 Chain0 PSA RFMTA311020EMM B301_V02 PIFA i-pex(MHF) 200 Chain1 PSA RFMTA311020EMM B301_V02 PIFA i-pex(MHF) 200 Chain0 VSO JR2Q00340-1 Dipole RP SMA PLUG 40 Chain1 VSO JR2Q00340-1 Dipole RP SMA PLUG 40

MediaTek Confidential Page 12 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. 3.2 1 2 3 4 5 MT7921K Install User Guideline: Part-I Confidential B Please note that the above antennas are custom made for MediaTek MT7921K module and are not listed in Walsin Technology Corp standard catalogs. For the purchase of these antennas, please contact Walsin Technology as listed below directly. Only the above antennas are tested for compliance with the FCC rules, and all other antennas (even same type with lower gain) will require a re-assessment to be used with this module. Contact info for above certified antennas:

Company/Dept.: Walsin Technology Corp./ Antenna Business Dept. Contact window: Andrew Lin Tel: +886-3-475-8711 # 8172 Cell phone: +886-938-286-596 Email address: andrewlin@passivecomponent.com URL link: http://www.passivecomponent.com/zh-hant/products/antenna/

MediaTek Confidential Page 13 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B Host Integration instructions The product is designed to be used with NGFF (Next Generation Form Factor) M.2 2230 PCIE Bus, please install module into a M.2 2230 PCIE slot. 3.4 Host product testing guidance HOST must follow the specific restrictions listed in 3.5 Regulatory notes section below and section 3 of KDB996369 D04 V02 Module Integration Guide v01, to verify that the host product meets all the applicable rules. MediaTek Confidential Page 14 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. 3.3 3.5 MT7921K Install User Guideline: Part-I Confidential B Regulatory notes Federal Communication Commission Interference Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

- Reorient or relocate the receiving antenna.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device meets all the other requirements specified in Part 15E, Section 15.407 of the FCC Rules. Increase the separation between the equipment and receiver. Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. MediaTek Confidential Page 15 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B This module is intended for OEM integrators only. Per FCC KDB 996369 D03 OEM Manual v01 guidance, the following conditions must be strictly followed when using this certified module:

KDB 996369 D03 OEM Manual v01 rule sections:

2.2 List of applicable FCC rules This module has been tested for compliance to FCC Part 15 Subpart C (15.247) and Subpart E

(15.407). Device is tested for compliance as a low power indoor client device within 5.9257.125 GHz band. 2.3 Summarize the specific operational use conditions The module is tested for standalone mobile RF exposure use condition. Any other usage conditions such as co-location with other transmitter(s) will need a separate reassessment through a class II permissive change application or new certification. This module is authorized for Low Power Indoor Client applications only; final host product must be for indoor operations only. Further operation restrictions on the host product include:

*Prohibited for control of or Communications with unmanned aircraft systems. 2.4 Limited module procedures Not applicable. 2.5 Trace antenna designs Not applicable. 2.6 RF exposure considerations This equipment complies with FCC mobile radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. A separate SAR/Power Density evaluation is required to confirm compliance with relevant FCC portable RF exposure rules. MediaTek Confidential Page 16 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B 2.7 Antennas The following antennas have been certified for use with this module; antennas of the same type with equal or lower gain may also be used with this module except for operations within the 5.925~7.125GHz band. Use of any other antenna with a lower or higher gain in this band will require a separate reassessment through a Class II Permissive Change application or new certification. Ant. Set RF Chain No. Brand Model Freq. Range

(GHz) Ant. Type Connector Type Ant. Net Gain

(dBi) Chain0 Cortec AN2450-4902BRS Dipole R-SMA Chain1 Cortec AN2450-4902BRS Dipole R-SMA Cable Length

(mm) 150 150 Cable Loss (dB) 2.4~2.4835GHz : 0.5 5.15~5.85GHz : 0.8 2.4~2.4835GHz : 0.5 5.15~5.85GHz : 0.8 Excluding Cable Loss Ant. Gain

(dBi) 2.92 4.67 2.92 4.67 Chain0 PSA Chain1 PSA Chain0 PSA RFMTA340718EML B302 RFMTA340718EML B302 RFMTA311020EMM B301 Chain1 PSA RFMTA311020EMM B301 PIFA i-pex(MHF) 200 included cable loss PIFA i-pex(MHF) 200 included cable loss PIFA i-pex(MHF) 200 PIFA i-pex(MHF) 200 2.42 3.87 2.42 3.87 3.18 4.92 3.18 4.92 1.71 4.82 3.31 1.71 4.82 3.31 1.71 4.82 4.76 4.29 4.61 4.09 1.71 4.82 4.76 4.29 4.61 4.09 1.62 3.2 3.93 3.61 3.61 3.14 1.62 3.2 3.93 3.61 3.61 3.14 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 2.4~2.4835 5.15~5.85 5.92~7.125 2.4~2.4835 5.15~5.85 5.92~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 2.4~2.4835 5.15~5.85 5.925~6.425 6.425~6.525 6.525~6.875 6.875~7.125 Chain0 PSA RFMTA311020EMM B301_V02 PIFA i-pex(MHF) 200 Chain1 PSA RFMTA311020EMM B301_V02 PIFA i-pex(MHF) 200 Chain0 VSO JR2Q00340-1 Dipole RP SMA PLUG 40 Chain1 VSO JR2Q00340-1 Dipole RP SMA PLUG 40

MediaTek Confidential Page 17 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. 1 2 3 4 5 MT7921K Install User Guideline: Part-I Confidential B 2.8 Label and compliance information The final end product must be labeled in a visible area with the following: Contains FCC ID:

RAS-MT7921K. The grantee's FCC ID can be used only when all FCC compliance requirements are met. 2.9 Information on test modes and additional testing requirements This transmitter is tested in a standalone mobile RF exposure condition and any co-located or simultaneous transmission with other transmitter(s) class II permissive change re-evaluation or new certification. 2.10 Additional testing, Part 15 Subpart B disclaimer This transmitter module is tested as a subsystem and its certification does not cover the FCC Part 15 Subpart B (unintentional radiator) rule requirement applicable to the final host. The final host will still need to be reassessed for compliance to this portion of rule requirements if applicable. As long as all conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed. IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product

(including the transmitter) and obtaining a separate FCC authorization. MediaTek Confidential Page 18 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited. MT7921K Install User Guideline: Part-I Confidential B Manual Information To the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the users manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. OEM/Host manufacturer responsibilities OEM/Host manufacturers are ultimately responsible for the compliance of the Host and Module. The final product must be reassessed against all the essential requirements of the FCC rule such as FCC Part 15 Subpart B before it can be placed on the US market. This includes reassessing the transmitter module for compliance with the Radio and EMF essential requirements of the FCC rules. This module must not be incorporated into any other device or system without retesting for compliance as multi-radio and combined equipment. MediaTek Confidential Page 19 of 19 2021 MediaTek Inc. This document contains information that is proprietary to MediaTek Inc. Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Label Location EuT Front side

 

 

For FCC, IC, NCC, CE

 

 

MediaTek Inc. No. 1, Dusing 1st Rd., Hsinchu Science Park Hsinchu City 30078, Taiwan Date: 2022-02-10 FCC ID: RAS-MT7921K A U T H O R I Z A T I O N L E T T E R To Whom It May Concern:

MediaTek Inc. hereby authorizes Andrea Hsia/ Supervisor of Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (BV CPS Taoyuan), to act on its behalf in all matters relating to the Federal Communication Commission (FCC) application for equipment authorization in connection with the FCC ID listed above, including signing of all documents relating to these matters. Any and all acts carried out by Andrea Hsia/

Supervisor of BV CPS Taoyuan on Media Tek Inc.s behalf, within the scope of the powers granted herein, shall have the same effect as acts of its own. If you have any questions regarding the authorization, please dont hesitate to contact us. Sincerely yours,

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan FCC ID: RAS-MT7921K To the attention of Federal Communications Commission Authorization and Evaluation Division Permanent Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, the Applicant hereby requests confidential treatment of information accompanying this Application as outlined below:

Operational Description Software Operating Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely yours,

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan Date: 2020-01-09 A U T H O R I Z A T I O N L E T T E R To whom it may concern:

I, the undersigned Siegfried Chang of Media Tek Inc., Inc. hereby authorize Stella Chang of Media Tek Inc. to act on my behalf in all matters relating to all processes required in FCC and any communication needed with the national authority. Any and all acts carried out by Stella Chang on my behalf shall have the same effects as acts of our own. This agreement is valid until permanent. If you have any questions regarding the authorization, please dont hesitate to contact us. Sincerely yours,

Siegfried Chang/ Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: siegfried.chang@mediatek.com

 

 

FCC ID: RAS-MT7921K Description of Permissive Change Ref: FCC Class II Permissive change for FCC ID: RAS-MT7921K

(Original 6XD cert approval date: 01/28/2022, NII cert approval date: 01/05/2021, DTS cert approval date: 01/05/2021) The application is prepared for FCC Class II Permissive Change to add frequency band through software enabling to its original parent application. The adding frequency band is U-NII-4 and U-NII-3, U-NII-4 span channels, and power of other UNII bands were also verified to ensure the compliance. All models, updated versions, are electrically identical in all aspects except enabling frequency bands. Andrea Hsia, Supervisor Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Tel: 886 3 318 3232, ext. 4311628 Fax: 886-3-327 0892 Email: andrea.hsia@bureauveritas.com Data: 2022-02-23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MediaTek Inc. No. 1, Dusing 1st Rd., Hsinchu Science Park Hsinchu City 30078 Taiwan Date: 2022-02-09 FCC ID: RAS-MT7921K To the attention of:

Federal Communications Commission Authorization and Evaluation Division Declaration Letter for Client Devices We, MediaTek Inc., attest that this device under FCC ID: RAS-MT7921K complies with device protocol requirements and operational restrictions for Client Devices. a) This device will only associate and connect with an indoor access point or subordinate device and never directly connects to other client devices. b) Client devices must be under control of an U-NII-4, Indoor access point or subordinate device.. c) Clients shall passively scan to associate with access point or subordinate. d) Clients are permitted to initiate a brief probe message requesting to join and associated with a specific Access Point or Subordinate. e) Clients cannot have a direct connection to the internet to source the internet to other clients, access points, subordinates or clients from a wired or direct connection. f) We, the grantee, will document the physical restrictions associated with the equipment categories for host products (label and statement) as conditions-of-use through the host manufacture's integration instructions. g) We acknowledge this device is subject to and in full compliance with the device restrictions listed below. All users are notified of these restrictions through the user manual. A statement in a conspicuous location on the device and the user's manual: Section 15.19 Statement (if not on the device) This device's operation will not be allowed on cars, trains, boats, and aircraft, except that low power indoor devices and associated client devices can operate on large aircraft above 10,000 feet. If you should have any questions regarding this declaration, please do not hesitate to contact us, thank you!

Sincerely yours,

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 E-mail: Stella.Chang@mediatek.com

 

 

 

 

 

 

 

 

 

 

FCC ID: RAS-MT7921K Description of Permissive Change Ref: FCC Class II Permissive change for FCC ID: RAS-MT7921K

(Original 6XD cert approval date: 11/03/2021) The application is prepared for FCC Class II Permissive Change to add 2 new antennas set (Model:RFPCA460632IMMB701/RFMTA21230IMMB701) which can be used with the module. No changes to the design or circuitry of the module itself have been made. For more info about the antenna info, please refer to below table. FCC ID: RAS-MT7921K FCC ID: RAS-MT7921K Andrea Hsia, Surpervisor Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Tel: 886 3 318 3232, ext. 4311628 Fax: 886-3-327 0892 Email: andrea.hsia@bureauveritas.com Data: 2022-01-06

 

 

 

 

 

 

 

 

 

 

MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan Date: 2021-08-19 FCC ID: RAS-MT7921K A U T H O R I Z A T I O N L E T T E R To Whom It May Concern:

MediaTek Inc. hereby authorizes Debby Lin / Senior specialist of Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (BV CPS Taoyuan), to act on its behalf in all matters relating to the Federal Communication Commission (FCC) application for equipment authorization in connection with the FCC ID listed above, including signing of all documents relating to these matters. Any and all acts carried out by Debby Lin / Senior specialist of BV CPS Taoyuan on MediaTek Inc.s behalf, within the scope of the powers granted herein, shall have the same effect as acts of its own. If you have any questions regarding the authorization, please dont hesitate to contact us. Sincerely yours,

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

FCC ID: RAS-MT7921K Description of Permissive Change Ref: FCC Class II Permissive change for FCC ID: RAS-MT7921K (Original approval date:

01/05/2021) The application is prepared for FCC Class II Permissive Change, only software change for this application, the detail as list below, 1. Adjusting the CBP detection sensitivity (assumed antenna gain -20 dBi), not impact in RF transmit characteristics. 2. Added SAR testing, EUT from mobile device category to portable device category, reduced the TX power value for 5mm SAR testing separation distance. Device RF circuit and hardware are identical. Debby Lin, Senior Specialist Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Tel: 886 3 318 3232, ext. 4311900 Fax: 886-3-327 0892 Email: debby.lin@bureauveritas.com Data: 2021-11-01

 

 

WARNING:pdfminer.pdfpage:The PDF <_io.BufferedReader name='/Volumes/Scratch/Incoming/eg-scratch/5483619.pdf'> contains a metadata field indicating that it should not allow text extraction. Ignoring this field and proceeding. Use the check_extractable if you want to raise an error in this case MediaTek Inc. No. 1, Dusing 1st Rd., Hsinchu Science Park Hsinchu City 30078, Taiwan FCC ID: RAS-MT7921K To the attention of Federal Communications Commission Authorization and Evaluation Division Permanent Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, the Applicant hereby requests confidential treatment of information accompanying this Application as outlined below:

Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely yours,

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

WARNING:pdfminer.pdfpage:The PDF <_io.BufferedReader name='/Volumes/Scratch/Incoming/eg-scratch/5486898.pdf'> contains a metadata field indicating that it should not allow text extraction. Ignoring this field and proceeding. Use the check_extractable if you want to raise an error in this case MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan Date: 2021-08-20 FCC ID: RAS-MT7921K To the attention of Federal Communications Commission Authorization and Evaluation Division Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the commissions rules, we request short-term confidential treatment for the following information until 180 days after the Grant Date of Equipment Authorization in order to ensure sensitive business information remains confidential until the actual marketing of the device:

Internal Photos Users Manual Test setup photo Sincerely yours,

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MediaTek Inc.

No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan

FCC ID: RAS-MT7921K

To the attention of

Federal Communications Commission

Authorization and Evaluation Division

Permanent Confidentiality Request

Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, the Applicant

hereby requests confidential treatment of information accompanying this

Application as outlined below:

Operational Description

The above materials contain trade secrets and proprietary information not

customarily released to the public. The public disclosure of these matters might

be harmful to the Applicant and provide unjustified benefits to its competitors.

The Applicant understands that pursuant to Rule 0.457, disclosure of this

Application and all accompanying documentation will not be made before the

date of the Grant for this application.

Sincerely yours,

-----------------------------------

Stella Chang/ Business Marketing Manager

MediaTek Inc.

Tel.: + 886-3-5600868

Fax: + 886-3-6662673

E-mail: Stella.Chang@mediatek.com



 

 

MediaTek Inc.

No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan

Date: 2021-07-13

FCC ID: RAS-MT7921K

To the attention of

Federal Communications Commission

Authorization and Evaluation Division

Confidentiality Request

Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we request

short-term confidential treatment for the following information until 180 days

after the Grant Date of Equipment Authorization in order to ensure sensitive

business information remains confidential until the actual marketing of the

device:

Test setup photo

Internal Photos

User’s Manual

Sincerely yours,

-----------------------------------

Stella Chang/ Business Marketing Manager

MediaTek Inc.

Tel.: + 886-3-5600868

Fax: + 886-3-6662673

E-mail: Stella.Chang@mediatek.com



 

 

FCC ID: RAS-MT7921K Description of Permissive Change The application is prepared for FCC Class II Permissive Change to add 2 new antennas set (Model: LA9RF059-CS-H and 14008-02650500) which can be used with the module. No changes to the design or circuitry of the module itself have been made. For more info about the antenna info, please refer to below table. FCC ID: RAS-MT7921K Debby Lin, Senior Specialist Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Tel: 886 3 318 3232, ext. 4311900 Fax: 886-3-327 0892 Email: debby.lin@bureauveritas.com Data: 2021-07-16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan FCC ID: RAS-MT7921K A U T H O R I Z A T I O N L E T T E R To Whom It May Concern:

MediaTek Inc. hereby authorizes Andrea Hsia/ Supervisor of Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (BV CPS Taoyuan), to act on its behalf in all matters relating to the Federal Communication Commission (FCC) application for equipment authorization in connection with the FCC ID listed above, including signing of all documents relating to these matters. Any and all acts carried out by Andrea Hsia/

Supervisor of BV CPS Taoyuan on MediaTek Inc.s behalf, within the scope of the powers granted herein, shall have the same effect as acts of its own. If you have any questions regarding the authorization, please dont hesitate to contact us. Sincerely yours,

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

MTK04667 _17-Feb-2021 16:14:12 MediaTek Inc. No.1, Duxing ist Rd., East District, Hsinchu City 300, Taiwan Date: 2021-02-17 FCC ID: RAS-MT7921K To the attention of:

Federal Communications Commission Authorization and Evaluation Division Subject: 6XD Power Reduction Attestation for FCC ID: RAS-MT7921K We, MediaTek Inc., hereby declare the output power of this module has been lowered by adjusting power settings via firmware in this C2PC application for U-NII Bands 5/6/7/8. The power is permanently fixed at the factory before shipping and cannot be modified by any other third-party. All future units sold will be using this new output power with both original (Model:

RFMTA311020EMMB301) and new (Model: RFMTA311020EMMB301_V02) antenna sets approved for this module under 6XD equipment class. lf you should have any questions, please do not hesitate to contact us for more information. Thank you!

Sincerely yours, Stella Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan We, MediaTek Inc. declare that the device does not support any non-US channels in all the operational mode(s) for the following product. FCC ID: RAS-MT7921K If you should have any question(s) regarding this declaration, please dont hesitate to contact us. Thank you!

__________________________________ Stella Chang/ Business Marketing Manager Media Tek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

MediaTek Inc. No.1, Dusing 1st Rd., Hsinchu Science Park Date: 2020-01-09 A U T H O R I Z A T I O N L E T T E R To whom it may concern:

I, the undersigned Siegfried Chang of MediaTek Inc., hereby authorize Stella Chang of MediaTek Inc. to act on my behalf in all matters relating to all processes required in FCC and any communication needed with the national authority. Any and all acts carried out by Stella Chang on my behalf shall have the same effects as acts of our own. This agreement is valid until permanent. If you have any questions regarding the authorization, please dont hesitate to contact us. Sincerely yours,

Siegfried Chang/ Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: siegfried.chang@mediatek.com

 

 

FCC ID: RAS-MT7921K Modular Approval Request Letter Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch October 21, 2020 Dear Application Examiner, MediaTek Inc., 2TX 11ax (WiFi6E) + BT/BLE Combo Card, FCC ID: RAS-MT7921K would like to have your authorization as a modular approval specific to the mobile RF exposure condition. statements. The requirements of KDB 996369 have been met and shown on the following 1. The modular transmitter must have its own RF shielding. The radio portion of this module has been shielded, please see exhibition External Photo. 2. The modular transmitter must have buffered modulation/data inputs. The EUT has buffered data inputs, it is integrated in chip MT7921. 3. The modular transmitter must have its own power supply regulation. The part number of this regulator is MT7921. 4. The modular transmitter must comply with the antenna requirements of section 15.203 and 15.204(C). The EUT meets the FCC antenna requirements. The spurious emission, unique antenna connector and photo of antennas are shown in the test report and photo exhibits. 5. The modular transmitter must be tested in a stand-alone configuration The EUT was tested in a stand-alone configuration via a USB extender. Please see section Photographs of Test Configuration in the test report, the EUT was plugged in this extender. 6. The modular transmitter must be labeled with its own FCC ID number. Please see exhibition Label Sample for the FCC ID of this module. And also in the exhibition Users Manual, there are instructions give to the OEM on how to label the end product. FCC ID: RAS-MT7921K 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. The EUT is compliant with all applicable FCC rules. Detail instructions for maintaining compliance are given in the Users Manual. 8. The modular transmitter must comply with any applicable RF exposure requirements. The EUT is compliant with all applicable RF exposure requirements. RF Exposure is addressed in the RF exposure exhibition. Please contact me if you have any further questions. Thanks for your attention. Best Regards, Andrea Hsia / Supervisor Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Tel: 886-3-318 3232 Fax: 886-3-327 0892 Email: andrea.hsia@tw.bureauveritas.com

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No. 1, Dusing 1st Rd., Hsinchu Science Park Hsinchu City 30078, Taiwan MediaTek Inc. Date: 2020/12/08 FCC ID: RAS-MT7921K To the attention of:

Federal Communications Commission Authorization and Evaluation Division Declaration Letter for Low Power Indoor Client Devices (6XD) We, MediaTek Inc., hereby declare that our device is an indoor client that will only associate with a low power indoor AP or indoor Subordinate device at a power equal to or lower than the power advertised by access point, and never above the maximum output power allowed by the FCC grant of equipment authorization. The device will initiate a request to associate and establish a connection only after passively scanning to determine if a low power indoor access point is available nearby, and does not support any direct air interface connections to other client devices. The device may transmit brief messages to an access point when attempting to join its network after detecting a signal that confirms that an access point is operating on a particular channel. These brief messages will have a time-out mechanism if it does not receive a response from an AP. The device will be under the control of a low power indoor AP at all times. A contention-based protocol is used to avoid co-channel interference with incumbent devices sharing the band, as demonstrated inside the test report. The CBP mechanism is embedded within the module and independent of the host. The integration manual supplied with this module contains all applicable indoor use only and operational restriction warnings to notify the host integrator. If you should have any questions regarding this declaration, please do not hesitate to contact us, thank you!

Sincerely yours,

Stella Chang / Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan MediaTek Inc. DFS client device channel plan and software operational declaration We, MediaTek Inc., declare that the device, FCC ID: RAS-MT7921K Model Name: MT7921K, does not have Ad Hoc on non-US frequencies and/or on DFS frequencies. Also, the client software and associated drivers will not initiate any transmission on DFS frequencies without initiation by a master. This includes restriction on transmissions for beacons and support for ad-

hoc peer-to-peer modes. Below is the channel / frequency plan for the device 1 2 3 4 5 6 7 8 9 10 11 Frequency (MHz) 2412 2462 Active Active Active Active Active Active Active Active Active Active Active 2417 2422 2427 2432 2437 2442 2452 2457 2447 Scan Type CH CH Frequency (MHz) Scan Type 12 13 2467 2472 Active Active CH 36 38 40 42 44 46 48 Frequency (MHz) 5180 5240 Active Active Active Active Active Active Active 5190 5200 5210 5220 5230 Scan Type CH 52 54 56 58 60 62 64 Frequency (MHz) 5260 5270 5280 5290 5300 5310 5320 Scan Type Passive Passive Passive Passive Passive Passive Passive CH 100 Frequency (MHz) 5500 102 5510 104 5520 106 5530 108 5540 110 5550 112 5560 116 5580 118 5590 120 5600 122 5610 Scan Type Passive Passive Passive Passive Passive Passive Passive Passive Passive Passive Passive CH 124 Frequency (MHz) 5620 126 5630 128 5640 132 5660 134 5670 136 5680 138 5690 140 5700 142 5710 144 5720 Scan Type Passive Passive Passive Passive Passive Passive Passive Passive Passive Passive CH 149 Frequency (MHz) 5745 165 5825 Active Active Active Active Active Active Active Active 153 5765 151 5755 161 5805 159 5795 157 5785 155 5775 Scan Type Also, on DFS channels, the WLAN driver in the device operates under the control of an AP at all times, except when in ad-hoc mode on US non-DFS channels. The device passively scans DFS frequencies until a master device is detected. The control of this functionality is not accessible to anyone under any conditions. Furthermore, the firmware is protected by a special signature and CRC checksum. Signature and CRC checksum will be calculated and verified before firmware upgrade. Unauthorized modification to firmware will lead to the failure of verification and thus firmware upgrade will not be allowed. Sincerely yours, MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan

Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com