MT7921K 2TX 11ax (WiFi6E) +BT/BLE Combo Card Users Manual

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.