FCC ID: 2AVFM-VIM3 VIM3

VIM3 Instructions VIM3 Interfaces Purpose USB 3.0 port that swaps to 2.0 when PCI-E is active, 900mA output Gigabit LAN port that supports Wake-On-LAN HDMI port supporting CEC USB-C port with USB power delivery (5-20V input) and 2.0 speeds USB 2.0 port that supports 500mA output 4-wire fan header utilising pulse width modulation Force reboot your VIM3 in the event of a system freeze Press this 3 times in 2 seconds to enter MaskROM mode This button turns on your VIM3 M2 clearance holes for a case, or adding a heatsink 6-axis accelerometer A header for connecting a real-time clock (button) battery General input/output pins for VIM3s SoC, or plugging-in a Toneboard Increases VIM3s available I/O beyond what A311D can provide STM8S003 micro-controller with programmable EEPROM Power switch activated via Wake-On-LAN 2-channel infrared receiver for the Khadas IR remote Indicator LEDs Front (Blue) Component USB-A RJ-45 HDMI USB-C USB-A Fan Header Reset Button Function Button Power Button M2 Hole G-Sensor RTC Header 40-Pin GPIO GPIO Expander MCU WOL Switch Infrared Module LEDs 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K IPEX Antenna IPEX Antenna Wi-Fi and Bluetooth antenna connector Wi-Fi and Bluetooth antenna connector Back (Red) 1 2 3 4 5 6 7 8 9 A B C Component VIN Micro-SD Slot Current Limit Switch M.2 Slot TP MIPI-DSI MIPI-CSI SPI Flash XPWR Pads M-Register S-Register 5-12V power input, supports Power-Over-Ethernet via M2X Extension Purpose Molex Slot, spec version 2.x/3.x/4.x (SDSC/SDHC/SDXC) Prevents damage to VIM3 due to faulty loading conditions PCIe 2.0 (x1 lane), supports M.2 2280 NVMe SSDs 10-pin 0.5mm pitch FPC connector for touch input 30-pin, 0.5mm pitch FPC connector for 4-lane 1080P displays 30-pin, 0.5mm pitch, 4-lane, dual cameras, 8MP image signal processing Flash memory module that interfaces over SPI Connect an external power switch using these pads Allows the EMMC to enter MaskROM mode Allows the SPI Flash to enter MaskROM mode Current Limit Switch Prevents damage to VIM3 due to faulty loading conditions VIM3 Buttons Reset Function Power x x x x x x x x Purpose Force Reboot VIM3 Enter Upgrade Mode (TST) Power ON/Wake Up VIM3 Enter Upgrade Mode (KEYS) Erase EMMC VIM3 Indicator LEDs Colour Behaviour Meaning Blue OFF Solid ON Power source disconnected Power source connected, SBC turned off White Red OFF Solid ON None SBC turned off SBC turned on None The above behaviours are default out-of-the-box, and can be altered by a user. For example the white LED can be made to blink or breathe. For more information on how to program them via your favourite OS (each OS is different), please consult with experts at forum.khadas.com. How To Boot Into Upgrade Mode There are 4 ways to boot into Upgrade Mode:

1.Keys Mode (Side-Buttons) 2.Serial Mode 3.TST Mode (Recommended) 4.MRegister Mode Keys Mode (U-Boot is Running Normally) 1.Power on VIM3. 2.Long press the POWER key without releasing it. 3.Short press the Reset key and release it. 4.Count for 2 to 3 seconds, then release the POWER key to enter into Upgrade Mode. You will see the sys-led turn ON when youve entered Upgrade Mode. Serial Mode (For Developers) 1.Refer this guide to setup your serial tool for VIM3. 2.Once again, make sure youve done the correct connections and setup.Hit any keys at the moment of bootup to stop autoboot. This step will let VIM3 boot into U-Boot Mode. 3.Type run update in the terminal of U-Boot as below. You will see the sys-

led turn ON when youve entered Upgrade Mode. kvim3# run update TST Mode (Recommended) 1.Power-on VIM3. 2.Quickly press the Function key 3 times in 2 seconds, then release the key. 3.You will see the Power-LED (Blue) blink for about 3 seconds. After the Power-

LED (Blue) turns OFF, this indicates that the board is in Upgrade Mode (Maskrom Mode). MRegister Mode 1.Power on VIM3. 2.Use a tweezer to short-circuit the two pads of the M register, and without releasing 3.Short press the Reset key and then release it, to boot into upgroup mode FCC Modular Usage Statement Note 1: This module certified com. plies with RF exposure requirements under mobile or fixed condition; this module is to be installed only in mobile or fixed applications A mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter's radiating structure(s) and the body of the user or nearby persons. Transmitting devices designed to be used by consumers or workers that can be easily re-located, such as wireless devices associated with a personal computer, are considered to be mobile devices if they meet the 20 centimeter separation requirement. A fixed device is defined as a device is physically secured at one location and is not able to be easily moved to another location. Note 2: Host product manufacturers must provide in their user manual the required RF exposure information for mobile & fixed usage of this module. Host product manufacturers must use the following RF exposure statement in their user manual This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and all persons. This transmitter must not be co-location or operating in conjunction with any other antenna or transmitter. Note 3: Any modifications made to the module will void the Grant of Certification, this module is limited to OEM installation only and must not be sold to end-users, end-user shall have no manual instructions to remove or install the device, only software or operating procedure shall be placed in the end-user operating manual of final products. Note 4: Additional testing and certification may be necessary when multiple modules are used. Note 5:The module may be operated only with the integral chip antenna with which it is authorized. Note 6: To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring compliance with the module(s) installed and fully operational. For example, if a host was previously authorized as an unintentional radiator under the Suppliers Declaration of Conformity procedure without a transmitter certified module and a module is added, the host manufacturer is responsible for ensuring that the after the module is installed and operational the host continues to be compliant with the part 15B unintentional radiator requirements. Since this may depend on the details of how the module is integrated with the host, the manufacturer shall provide guidance to the host manufacturer for compliance with the part 15B requirements. Note 7: The FCC ID label on the final system must be labeled with Contains FCC ID: 2AVFM-

VIM3 or Contains transmitter module FCC ID: 2AVFM-VIM3. Note 8: The FCC rule/s for this module are CFR 47 Part 15 Subpart C. Note 9: This modular transmitter is only FCC authorized for the specific rule parts listed on its grant. The host product manufacturer is responsible to any other FCC rules that apply to the host not covered by the modular. transmitter grant of certification. The final host product will require Part 15 Subpart B compliance when the modular transmitter is installed. FCC 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: 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 or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AVFM-VIM3 Label and Location VIM3 Model No.: VIM3 Pro FCC ID: 2AVFM-VIM3 Size: L2.0cm*W1.5cm Label Location This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 1

C5266091_X8_Ed.1 Letter of Authorization Shenzhen Wesion Technology Co., Ltd. Company: Shenzhen Wesion Technology Co., Ltd. Address: A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis., Shenzhen, China. Product Name: VIM3 Model Number: VIM3 Pro, VIM3 Basic, VIM3L FCC Identifier: 2AVFM-VIM3 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Date: January 06, 2020 Name:

Title: Manager Signature of applicant: Terry Yang 1/1

C5266091_X10_Ed.1 Shenzhen Wesion Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7075 Flying Cloud Dr. Eden Prairie, MN 55344 USA Date: January 06, 2020 Subject: Request for Confidentiality FCC ID: 2AVFM-VIM3 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality Short-Term Confidentiality No No No No No No No No No No No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Terry Yang Title: Manager 1/1

Shenzhen Wesion Technology Co., Ltd. A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis., Shenzhen, China. Product Similarity Declaration Date: January 06, 2020 FCC ID: 2AVFM-VIM3 Model Number: VIM3 Pro, VIM3 Basic, VIM3L To:

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD To Whom It May Concern, We, Shenzhen Wesion Technology Co., Ltd. hereby declare that our product

(Bluetooth Tower Stereo) Model Number: VIM3 Pro, VIM3 Basic, VIM3L board, Schematic, Hardware version, Software version, structure and internal photos are same, named differently due to marketing purposes. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely,

(Signed) Name/Title: Terry Yang Company: Shenzhen Wesion Technology Co., Ltd. Address: A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis.,

/ Manager Shenzhen, China. Tel: 0755-23076626 Fax: 0755-23076626 E-Mail: terry@khadas.com

Shenzhen Wesion Technology Co., Ltd. Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-01-06 Subject; Modular Transmitter Application Company name: VIM3 FCC ID: 2AVFM-VIM3 Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;-

FCC KDB 996369 D01 Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Equip Auth Guide v02. FCC ID 2AVFM-VIM3 has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. not compliance The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. All modulation and data inputs are buffered by circuitry on the transmitter chip CC2500, as is shown in the schematic. The module must contain power supply regulation on the module. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). The module must demonstrate compliance in a stand-alone configuration. Power supply regulation is provided by circuitry on the transmitter chip CC2500, as is shown in the schematic. The antenna is permanently attached. Testing was performed in a stand-alone configuration, as shown in the test setup photos. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). The module is labeled with its own FCC ID number. Please refer to Label. The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. The module complies with this requirement. Please refer to user manual. The module must comply with RF exposure requirements The module complies with this requirement. Please refer to MPE report. FCC Modular Approval Request Rev 3.0 Shenzhen Wesion Technology Co., Ltd. Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist. Refer to the KDB for description of the complete requirements;

User Manual Page Number reference List of applicable FCC rules Summarize the specific operational use conditions Limited module procedures Trace antenna designs RF exposure considerations Antennas Label and compliance information Information on test modes and additional testing requirements Additional testing, Part 15 Subpart B disclaimer 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Requirements of KDB 996369 D03 KDB Ref Sect 4 4 4 4 4 4 4 4 5 2.10 Name: Terry Yang Date: 2020-01-06 Title: Manager Signature of applicant:

FCC Modular Approval Request Rev 3.0

Add: A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis., Shenzhen Wesion Technology Co., Ltd. Shenzhen, China. Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046

<2020-01-06>

Attn: Office of Engineering and Technology Subject: Attestation Letter regarding UNII devices FCC ID: 2AVFM-VIM3 Software security questions and answers per KDB 594280 D02:

Software Security description General Description 1 Describe how any software/firmware update will be obtained, downloaded, and installed. Software that is accessed through manufacturers website or devices management system, must describe the different levels of security. 2 Describe all the radio frequency parameters that are modified by any software/firmware without any hardware changes. Are these parameters in some way limited, such that, it will not exceed the authorized parameters?

3 Describe in detail the authentication protocols that are in place to ensure that the source of the software/firmware is legitimate. Describe in detail how the software is protected against modification 4 Describe in detail the verification protocols in We do not release the firmware on our website for downloading. Our direct host manufacturer (OEM) can request the firmware from us and it will be made available via secure server. Radio frequency parameters are limited by US regulatory domain and country code to limit frequency and transmit power levels. These limits are stored in non-volatile memory by the module manufacturer at the time of production. They will not exceed the authorized values. The firmware is installed on each single module during manufacturing process. The correct firmware is verified and installed by the module manufacturer. In addition, the firmware binary is encrypted using open SSL encryption and the firmware updates can only be stored in non-volatile memory when the firmware is authenticated. The encryption key is known by the module manufacturer only. The process to flash a new firmware Add: A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis., Shenzhen Wesion Technology Co., Ltd. Shenzhen, China. place to ensure that installed software/firmware is legitimate 5 For a device that can be configured as a master and client (with active or passive scanning), explain how the device ensures compliance for each mode? In particular if the device acts as master in some band of operation and client in another; how is compliance ensured in each band of operation?

is using a secret key to decrypt the firmware, only correct decrypted firmware is stored in non-volatile memory (see #3). The device ensures the compliance by checking the configured parameter and operation values according to the regulatory domain and country code in each band. The device configured as a client without radar detection capability Software Security description Third-Party Access Control 1 2 3 1 No, third parties dont have the capability to access and change radio parameters. US sold modules are factory configured to US. N/A N/A Explain if any third parties have the capability to operate a US sold device on any other regulatory domain, frequencies, or in any manner that is in violation of the certification. Describe, if the device permits third-party software or firmware installation, what mechanisms are provided by the manufacturer to permit integration of such functions while ensuring that the RF parameters of the device cannot be operated outside its authorization for operation in the U.S. In the description include what controls and/or agreements are in place with providers of third-party functionality to ensure the devices underlying RF parameters are unchanged and how the manufacturer verifies the functionality. For Certified Transmitter modular devices, describe how the module grantee ensures that host manufacturers fully comply with these software security requirements for U-NII devices. If the module is controlled through driver software loaded in the host, describe how the drivers are controlled and managed such that the modular transmitter RF parameters are not modified outside the grant of authorization. Software Security description USER CONFIGURATION GUID Describe the user configurations permitted through the UI. If different levels of access are permitted for professional installers, system integrators or end-users, describe the differences. a. What parameters are viewable and There is no user configuration GUI. There is no user configuration GUI. Add: A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis., Shenzhen Wesion Technology Co., Ltd. configurable by different parties?

b. What parameters are accessible or modifiable Shenzhen, China. to the professional installer?

i. Are the parameters in some way limited, so that the installers will not enter parameters that exceed those authorized?

What controls exist that the user cannot operate the device outside its authorization in the U.S.?

ii. This device is not subject to professional installation c. What configuration options are available to the end-user?

i. ii. Are the parameters in some way limited, so that the installers will not enter parameters that exceed those authorized?

What controls exist that the user cannot operate the device outside its authorization in the U.S.?

d. Is the country code factory set? Can it be changed in the UI?

i. If so, what controls exist to ensure that the device can only operate within its authorization in the U.S.?

e. What are the default parameters when the device is restarted?

Can the radio be configured in bridge or mesh mode? If yes, an attestation may be required. Further information is available in KDB Publication 905462 D02. For a device that can be configured as a master and client (with active or passive scanning), if this is user configurable, describe what controls exist, within the UI, to ensure compliance for each mode. If the device acts as a master in some 2 3 The end user is not able to configure any parameters related to the devices radio The parameters can only be changed remotely within the limits of country code US. The country code and regulatory domain control do limit all the parameters set The country code is factory set and is never changed by UI. The country code is factory set and is never changed by UI At each boot up the country code and the antenna gain are read from the non-volatile memory, those values are configured during production. Not supported Not Supported Add: A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis., Shenzhen Wesion Technology Co., Ltd. 4 Shenzhen, China. bands and client in others, how is this configured to ensure compliance?

For a device that can be configured as different types of access points, such as point-to-point or point-to-multipoint, and use different types of antennas, describe what controls exist to ensure compliance with applicable limits and the proper antenna is used for each mode of operation. See Section 15.407(a). The device does not support these modes/features. Sincerely, Name:

Company:

Address:

Phone:

Fax:

E-Mail:

Terry Yang / Manager Shenzhen Wesion Technology Co., Ltd. A#511, Mingyou Purchasing Center, Baoyuan Rd., Xixiang St., Baoan Dis., Shenzhen, China. 0755-23076626 0755-23076626 terry@khadas.com