2AXJ4TX20UAX1800 Dual Band Wi-Fi 6 Wireless USB Adapter

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TP-Link Corporation Limited Room 901, 9/F. , New East Ocean Centre, 9 Science Museum Road, Tsim Sha Tsui, Kowloon, Hong Kong 012423-17 rev2 Certification Application Attestation Statements Date: March 7, 2023 American Certification Body, Inc. 313 Park Avenue Suite 300 Falls Church, VA 22046 To Whom It May Concern: Statement for 47 CFR section 2.911(d)(5)(i) _____TP-Link Corporation Limited______ certifies that as of the date of the application the equipment for which authorization is sought is not “covered” equipment 1 prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, including affiliates or subsidiaries of the named companies, the applicant must include an explanation on why the equipment is not “covered” equipment. Additional Explanation: <N/A> Statement for 47 CFR section 2.911(d)(5)(ii) ____ TP-Link Corporation Limited_______ (“the applicant”) certifies that, as of the date of the filing of this application, the applicant ☐ - is /- is not identified on the Covered List as an entity producing “covered” equipment. Thank you, By: ____Sarah Wang__ (Signature 2 ) (Print name) Title: Compliance manager Company: TP-Link Corporation Limited_____ Telephone: +86 755 21534921 1 - The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist . 2 - Letters should be placed on appropriate letterhead.

Attestation Letter Federal Communications Commission Authorization and Evaluation Division We Name: TP-Link Corporation Limited Address: Room 901, 9/F., New East Ocean Centre, 9 Science Museum Road, Tsim Sha Tsui, Kowloon, Hongkong Declare that the device does not support channel 12 ~ 13 in 2.4GHz band and any non-US channels in all the operational mode(s) for the following product. Product: AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter FCC ID: 2AXJ4TX20U Model: Archer TX20U Brand: tp-link Sincerely, _________________ Name: Sarah Wang Position: Regulatory Compliance Manager Date: 2023-07-03

Declaration of Frequency Stability We [TP-Link Corporation Limited] ensure that the product (FCC ID: 2AXJ4TX20U, IC: 26583- TX20U) meets e-CFR Title 47 section 15.407(g) & RSS-GEN Section 8.11 and KDB 789033 D02v02r01 frequency stability such that the emissions are maintained within the band of operation under all conditions of normal operation as specified in the user's manual. Sincerely, _________________ Name: Sarah Wang Position: Regulatory Compliance Manager Date: 2023-07-03

Confidentiality Request Letter Federal Communications Commission Authorization and Evaluation Division FCC ID: 2AXJ4TX20U Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: 1. Block Diagram 2. Schematics 3. 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, _________________ Name: Sarah Wang Position: Regulatory Compliance Manager Date: 2023-07-03

Declaration of Authorization We Name: TP-Link Corporation Limited Address: Room 901, 9/F., New East Ocean Centre, 9 Science Museum Road, Tsim Sha Tsui, Kowloon, Hongkong Declare that: Name Representative of agent: Marlin Chen Agent Company name: MRT Technology (Suzhou) Co., Ltd Address: D8 Building, Youxin Industrial Park, No.2 Tian'edang Rd., Wuzhong Economic Development Zone City: Suzhou Country: China is authorized to apply for Certification of the following product(s): Product: AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter FCC ID: 2AXJ4TX20U Model: Archer TX20U Brand: tp-link Sincerely, _________________ Name: Sarah Wang Position: Regulatory Compliance Manager Date: 2023-07-03

Declaration of Conformity We Name: TP-Link Corporation Limited Address: Room 901, 9/F., New East Ocean Centre, 9 Science Museum Road, Tsim Sha Tsui, Kowloon, Hongkong Declare that: Product: AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter FCC ID: 2AXJ4TX20U Model: Archer TX20U Brand: tp-link Product which bears the above FCC ID is also compliant with the FCC requirements for sDOC. And the sDOC procedure shall be carried out prior to marketing the device in the US. Sincerely, _________________ Name: Sarah Wang Position: Regulatory Compliance Manager Date: 2023-07-03

Non-SDR (Software Defined Radio) Cover Letter Refer to KDB 442812 D01 SDR apps Guide v02r03. The following six questions can be used for determining if a radio can elect to be, or must be an SDR. 1. Can the RF parameters of the device be altered through software? Yes - go to 2. No, not an SDR No 2. Can third parties not permitted by the Commission through specific filings modify, configure, or load different software, or make configuration settings to operate the device or host hardware radio frequency parameters (frequency range, modulation type, maximum output power or other radio parameters) in any other way than granted (or expected to be granted)? Yes, must be an SDR. No - go to 3. No 3. Is the device capable of operating in any other in any other way than granted, or will be, granted? Yes, - go to 4. No - go to 5. No 4. Is this a Part 15 client Device as defined in Section 15.202 (as opposed to a master device)? Yes, qualifies as a part 15 client devices - go to 5. No, must be an SDR. 5. Does the manufacturer elect SDR? Yes, elects to be an SDR. No, Not an SDR No Conclusion: According to the above questions reply, we can confirm this device (FCC ID: 2AXJ4TX20U & IC: 26583-TX20U) must be a Non-SDR device. __________________ Name: Sarah Wang Position: Regulatory Compliance Manager Date: 2023-07-03

Report No.: 2303TW0107-UE Product: AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter Brand Name: tp-link Model Number: Archer TX20U 1 of 4 External Photograph (1) EUT Photo (2) EUT Photo Report No.: 2303TW0107-UE 2 of 4 (3) EUT Photo (4) EUT Photo Report No.: 2303TW0107-UE 3 of 4 (5) EUT Photo (6) EUT Photo Report No.: 2303TW0107-UE 4 of 4 (7) EUT Photo

Label Label Location

Report No.: 2303TW0107-UI Product: AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter Brand Name: tp-link Model Number: Archer TX20U 1 of 3 Internal Photograph (1) EUT Photo (2) EUT Photo Report No.: 2303TW0107-UI 2 of 3 (3) EUT Photo (4) EUT Photo Report No.: 2303TW0107-UI 3 of 3 (5) EUT Photo (6) EUT Photo

MRT Technology (Suzhou) Co., Ltd Report No.: 2303RSU017-U2 Phone: +86-512-66308358 Report Version: V01 Web: www.mrt-cert.com Issue Date: 2023-07-05 Template Version:0.0 1 of 57 SAR MEASUREMENT REPORT FCC ID: 2AXJ4TX20U Applicant: TP-Link Corporation Limited Product: AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter Model No.: Archer TX20U Brand Name: tp-link FCC Rule Part(s): FCC 47 CFR Part 2.1093 Result: Complies Received Date: 2023-05-10 Test Date: 2022-05-10 ~ 2022-05-11 Reviewed By: Kevin Guo Approved By: Robin Wu The test results relate only to the samples tested. This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in IEEE1528, KDB 447498 and KDB 865664. Test results reported herein relate only to the item(s) tested. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. Report No.: 2303RSU017-U2 2 of 57 Revision History Report No. Version Description Issue Date Note 2303RSU017-U2 V01 Initial Report 2022-07-05 Valid Report No.: 2303RSU017-U2 3 of 57 CONTENTS Description Page 1. General Information ................................................................................................................................. 5 1.1. Applicant ........................................................................................................................................ 5 1.2. Manufacturer .................................................................................................................................. 5 1.3. Testing Facility ............................................................................................................................... 5 1.4. Product Information ........................................................................................................................ 6 1.5. Radio Specification under Test ...................................................................................................... 6 1.6. Antennas Details ............................................................................................................................ 7 2. Summary of Test Result .......................................................................................................................... 8 2.1. Test Standards ............................................................................................................................... 8 2.2. Environment Condition ................................................................................................................... 8 2.3. RF Exposure Limits ........................................................................................................................ 8 2.4. Test Result Summary .................................................................................................................... 9 3. Specific Absorption Rate (SAR) ............................................................................................................ 10 3.1. Introduction .................................................................................................................................. 10 3.2. Definition ...................................................................................................................................... 10 4. DASY6 Measurement System................................................................................................................ 11 4.1. Introduction .................................................................................................................................. 11 4.2. DASY6 Measurement System Diagram ...................................................................................... 11 4.3. System Components Details........................................................................................................ 12 5. The SAR Measurement Procedure ....................................................................................................... 23 5.1. Measurement Process Diagram .................................................................................................. 23 5.2. Test Position Definition ................................................................................................................ 24 5.3. Test Procedure ............................................................................................................................ 27 6. System Verificaiton ................................................................................................................................ 30 6.1. Tissue Check ............................................................................................................................... 30 6.2. System Check .............................................................................................................................. 33 7. Analysis and Results ............................................................................................................................. 35 7.1. Antenna Location ......................................................................................................................... 35 7.2. Conducted Power ........................................................................................................................ 36 7.3. SAR Test Results ......................................................................................................................... 41 8. Simultaneous Transmission Analysis .................................................................................................. 43 9. Test Equipment Used ............................................................................................................................. 44 Report No.: 2303RSU017-U2 4 of 57 10. Measurement Uncertainty ...................…

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Return Loss and Impedance Indicated By Head Tissue Meas. Items Original Value Current Value Deviation Return Loss(dB) -29.0 -27.73 -4.38% Impedance 53.7Ω - 0.01jΩ 51.46Ω - 1.61Ω -2.24Ω Real part -1.60Ω Imaginary part Test Date: 2022/05/18 Return Loss and Impedance Indicated By Head Tissue Meas. Items Original Value Current Value Deviation 5250MHZ Return Loss(dB) -32.8 -32.07 -2.23% Impedance 49.7Ω - 2.26jΩ 51.16Ω + 2.23jΩ 1.46Ω Real part 4.49Ω Imaginary part 5600MHZ Return Loss(dB) -33.1 -31.03 -6.25% Impedance 51.8Ω + 1.33jΩ 46.99Ω + 0.2jΩ -4.81Ω Real part -1.13Ω Imaginary part 5750MHZ Return Loss(dB) -23.4 -21.23 -9.27% Impedance 51.7Ω + 6.68jΩ 50.13Ω + 9.09jΩ -1.57Ω Real part 2.41Ω Imaginary part Test Date: 2023/03/27

MRT Technology (Taiwan) Co., Ltd Report No.:2303TW0107-U2 Phone: +886-3-3288388 Report Version: 1.0 Web: www.mrt-cert.com Issue Date: 2023-07-05 Page Number: 1 of 354 FCC ID : 2AXJ4TX20U Applicant : TP-Link Corporation Limited Application Type : Certification Product : AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter Model No. : Archer TX20U Brand Name : tp-link FCC Classification : Unlicensed National Information Infrastructure (NII) FCC Rule Part(s) : Part15 Subpart E (Section 15.407) Received Date : March 3, 2023 Test Date : March 17, 2023 ~ June 14, 2023 RF MEASUREMENT REPORT Test By : ( Owen Tsai ) Reviewed By : ( Paddy Chen ) Approved By : ( Chenz Ker) The test results relate only to the samples tested. This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in KDB 789033 D02v02r01. Test results reported herein relate only to the item(s) tested. The test report shall not be reproduced except in full without the written approval of MRT Technology (Taiwan) Co., Ltd. Report No.: 2303TW0107-U2 Page Number: 2 of 354 Revision History Report No. Version Description Issue Date Note 2303TW0107-U2 1.0 Original Report 2023-07-05 Valid Report No.: 2303TW0107-U2 Page Number: 3 of 354 CONTENTS Description Page General Information ....................................................................................................................... 6 1. INTRODUCTION ..................................................................................................................... 7 1.1. Scope ........................................................................................................................... 7 1.2. MRT Test Location ....................................................................................................... 7 2. PRODUCT INFORMATION ..................................................................................................... 8 2.1. Equipment Description .................................................................................................. 8 2.2. Product Specification Subjective to this Report ............................................................. 8 2.3. Working Frequencies for this report .............................................................................. 9 2.4. Description of Available Antennas ............................................................................... 10 2.5. Test Mode ................................................................................................................... 11 2.6. Configuration of Test System ...................................................................................... 12 2.7. Test System Details .................................................................................................... 12 2.8. Description of Test Software ....................................................................................... 13 2.9. Applied Standards ...................................................................................................... 13 2.10. Duty Cycle .................................................................................................................. 14 2.11. EMI Suppression Device(s)/Modifications ................................................................... 15 2.12. Labeling Requirements ............................................................................................... 15 3. DESCRIPTION OF TEST ...................................................................................................... 16 3.1. Evaluation Procedure ................................................................................................. 16 3.2. AC Line Conducted Emissions ................................................................................... 16 3.3. Radiated Emissions .................................................................................................... 17 4. ANTENNA REQUIREMENTS ................................................................................................ 18 5. TEST EQUIPMENT CALIBRATION DATE ............................................................................ 19 6. MEASUREMENT UNCERTAINTY ......................................................................................... 21 7. TEST RESULT ...................................................................................................................... 22 7.1. Summary .................................................................................................................... 22 7.2. 26dB Bandwidth Measurement ................................................................................... 23 7.2.1. Test Limit .................................................................................................................... 23 7.2.2. Test Procedure used ................................................................................................... 23 7.2.3. Test Setting ................................................................................................................. 23 7.2.4. Test Setup .................................................................................................................. 23 7.2.5. Test Result .................................................................................................................. 24 7.3. 6dB Bandwidth Measurement ..................................................................................... 39 Report No.: 2303TW0107-U2 Page Number: 4 of 354 7.3.1. Test Limit .................................................................................................................... 39 7.3.2. Test Procedure used ................................................................................................... 39 7.3.3. Test Setting ...............................................................…

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Report No.: 2303TW0107-U2 Page Number: 42 of 354 802.11ac-VHT40 6dB Bandwidth Channel 151 (5755MHz) Channel 159 (5795MHz) 802.11ac-VHT80 6dB Bandwidth Channel 155 (5775MHz) 802.11ax-HE20 6dB Bandwidth Channel 149 (5745MHz) Channel 157 (5785MHz) Report No.: 2303TW0107-U2 Page Number: 43 of 354 Channel 165 (5825MHz) 802.11ax-HE40 6dB Bandwidth Channel 151 (5755MHz) Channel 159 (5795MHz) 802.11ax-HE80 6dB Bandwidth Channel 155 (5775MHz) Report No.: 2303TW0107-U2 Page Number: 44 of 354 7.4. Output Power Measurement 7.4.1.Test Limit For client devices in the 5.15-5.25 GHz band, the maximum conducted output power over the frequency band of operation shall not exceed 250 mW provided the maximum antenna gain does not exceed 6 dBi. For the 5.25-5.35 GHz and 5.47-5.725 GHz bands, the maximum conducted output power over the frequency bands of operation shall not exceed the lesser of 250 mW or 11 dBm + 10 log B, where B is the 26 dB emission bandwidth in megahertz. For the band 5.725-5.85 GHz, the maximum conducted output power over the frequency band of operation shall not exceed 1 W (30dBm). If transmitting antennas of directional gain greater than 6dBi are used, the maximum conducted output power shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6dBi. 7.4.2.Test Procedure Used KDB 789033D02v02r01- Section E)3)b) Method PM-G 7.4.3.Test Setting Average power measurements were performed only when the EUT was transmitting at its maximum power control level using a broadband power meter with a pulse sensor. The power meter implemented triggering and gating capabilities which were set up such that power measurements were recorded only during the ON time of the transmitter. 7.4.4.Test Setup Report No.: 2303TW0107-U2 Page Number: 45 of 354 7.4.5.Test Result Product AX1800 Dual Band Wi-Fi 6 Wireless USB Adapter Test Engineer Marvin Test Site SR6 Test Date 2023/06/07 Test Mode CDD Mode Test Mode Data Rate/ MCS Channel No. Freq. (MHz) Ant 0 Average Power (dBm) Ant 1 Average Power (dBm) Total Average Power (dBm) Power Limit (dBm) Result 11a 6Mbps 36 5180 18.13 18.18 21.17 ≤ 23.98 Pass 11a 6Mbps 44 5220 18.31 18.28 21.31 ≤ 23.98 Pass 11a 6Mbps 48 5240 18.28 18.22 21.26 ≤ 23.98 Pass 11a 6Mbps 52 5260 18.04 17.97 21.02 ≤ 23.98 Pass 11a 6Mbps 60 5300 18.04 18.19 21.13 ≤ 23.98 Pass 11a 6Mbps 64 5320 18.12 18.25 21.20 ≤ 23.98 Pass 11a 6Mbps 100 5500 16.12 16.21 19.18 ≤ 23.98 Pass 11a 6Mbps 116 5580 18.63 18.26 21.46 ≤ 23.98 Pass 11a 6Mbps 140 5700 15.39 14.29 17.89 ≤ 23.98 Pass 11a 6Mbps 144 5720 18.27 18.00 21.15 ≤ 23.52 Pass 11a 6Mbps 149 5745 17.85 17.20 20.55 ≤ 30.00 Pass 11a 6Mbps 157 5785 18.05 17.04 20.58 ≤ 30.00 Pass 11a 6Mbps 165 5825 18.06 17.41 20.76 ≤ 30.00 Pass 11ac-VHT20 MCS0 36 5180 18.17 17.95 21.07 ≤ 23.98 Pass 11ac-VHT20 MCS0 40 5220 18.25 18.14 21.21 ≤ 23.98 Pass 11ac-VHT20 MCS0 48 5240 18.26 18.15 21.22 ≤ 23.98 Pass 11ac-VHT20 MCS0 52 5260 18.03 17.73 20.89 ≤ 23.98 Pass 11ac-VHT20 MCS0 60 5300 18.09 18.06 21.09 ≤ 23.98 Pass 11ac-VHT20 MCS0 64 5320 18.07 18.09 21.09 ≤ 23.98 Pass 11ac-VHT20 MCS0 100 5500 18.88 18.89 21.90 ≤ 23.98 Pass 11ac-VHT20 MCS0 116 5580 18.98 18.68 21.84 ≤ 23.98 Pass 11ac-VHT20 MCS0 140 5700 18.22 19.16 21.73 ≤ 23.98 Pass 11ac-VHT20 MCS0 144 5720 18.12 18.95 21.57 ≤ 23.30 Pass 11ac-VHT20 MCS0 149 5745 18.40 18.50 21.46 ≤ 30.00 Pass 11ac-VHT20 MCS0 157 5785 18.57 19.03 21.82 ≤ 30.00 Pass 11ac-VHT20 MCS0 165 5825 18.58 19.32 21.98 ≤ 30.00 Pass Report No.: 2303TW0107-U2 Page Number: 46 of 354 Test Mode Data Rate/ MCS Channel No. Freq. (MHz) Ant 0 Average Power (dBm) Ant 1 Average Power (dBm) Total Average Power (dBm) Power Limit (dBm) Result 11ac-VHT40 MCS0 38 5190 15.08 15.10 18.10 ≤ 23.98 Pass 11ac-VHT40 MCS0 46 5230 18.08 17.75 20.93 ≤ 23.98 Pass 11ac-VHT40 MCS0 54 5270 17.68 17.72 20.71 ≤ 23.98 Pass 11ac-VHT40 MCS0 62 5310 14.72 14.75 17.75 ≤ 23.98 Pass 11ac-VHT40 MCS0 102 5510 13.43 13.48 16.47 ≤ 23.98 Pass 11ac-VHT40 MCS0 110 5550 18.28 17.63 20.98 ≤ 23.98 Pass 11ac-VHT40 MCS0 134 5670 16.31 15.12 18.77 ≤ 23.98 Pass 11ac-VHT40 MCS0 142 5710 19.72 17.88 21.91 ≤ 23.98 Pass 11ac-VHT40 MCS0 151 5755 18.28 17.05 20.72 ≤ 30.00 Pass 11ac-VHT40 MCS0 159 5795 19.43 18.31 21.92 ≤ 30.00 Pass 11ac-VHT80 MCS0 42 5210 14.36 14.16 17.27 ≤ 23.98 Pass 11a…

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