A3LWCH931MWi-Fi/BT Transceiver

Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-02-2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: A3LWCH931M Samsung Electronics Co., Ltd. (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Samsung Electronics Co., Ltd. (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely, Minhyung Cho / Staff Engineer Samsung Electronics Co., Ltd. Date : 01/02/2026 Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-02-2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: A3LWCH931M Samsung Electronics Co., Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Minhyung Cho / Staff Engineer Samsung Electronics Co., Ltd. Date : 01/02/2026

Rev 1/26/2023 19 Chapin Rd, Building D. Pine Brook, New Jersey Tel No : 973-808-6375 Fax No : - Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-02-2026 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: A3LWCH931M Samsung Electronics Co Ltd, Inc certifies that, as of the date of the filing of the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information: FRN: 0027908797 Name: Samsung Electronics Co Ltd Address: 19 Chapin Rd, Building D. Pine Brook, NJ 07058 Contact Person: JENNI CHUN Tel.: 973-808-6375 Email: [email protected] Sincerely, Samsung Electronics America JENNI CHUN / General Manager

129, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi- do, 16677, Korea Tel No : +82-31-277-2688 Fax No : - MODULAR APPROVAL LETTER Applicant : Samsung Electronics Co Ltd FCC ID : A3LWCH931M Date : 01/02/2026 We would like to answer for Single Modular Approval in accordance with the requirement of rule part 15.212 as described below No. Requirements Comment Comply (Y/N) 1 The radio element of the modular transmitter has its own shielding Refer to the external photo Y 2 The modular transmitter must have buffered modulation data/inputs (if such inputs are provided) All input to the modules are buffered through microprocessor inputs. Y 3 The modular transmitter must have its own power supply regulation. Internal power regulators Refer to the Block-diagram Y 4 The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). Refer to the internal photo Y 5 The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. The EUT was tested in a standalone configuration via a SD extension cable Refer to the test setup photo Y 6 The modular transmitter must be labeled with its own FCC ID. If the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module Refer to the user manual Y 7 The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements Refer to the user manual Y 8 The modular transmitter must comply with any applicable RF exposure requirements Refer to the RF exposure statement for more details. Y Sincerely, Minhyung Cho / Staff Engineer Samsung Electronics Co., Ltd.

Rev 11/20/07 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID : A3LWCH931M 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: Exhibit Type File Name Block Diagram Schematics Schematics_PCB Layout Parts List Operational Description Block Diagram Schematics Schematics_PCB Layout Parts List Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name External Photo Internal Photo Test Setup Photo User Manual External Photo Internal Photo Test Setup Photo User Manual Sincerely, Minhyung Cho / Staff Engineer Samsung Electronics Co., Ltd. Date : 01/02/2026

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date : 01/02/2026 SUBJECT: FCC Application for (FCC ID : A3LWCH931M) To Whom It May Concern: We, the undersigned, hereby authorize Minhyung Cho at Samsung Electronics Co Ltd on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Samsung Electronics Co Ltd on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, NAME: JENNI CHUN TITLE: General Manager, Regulatory & Environmental Affairs Applicant: Samsung Electronics Co Ltd Address: 19 Chapin Rd, Building D. Pine Brook, NJ 07058 Date : 01/02/2026

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date : 01/02/2026 SUBJECT: FCC Application for (FCC ID : A3LWCH931M) To Whom It May Concern: We, the undersigned, hereby authorize Bong Seok Kim at CTK on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by CTK on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Minhyung Cho / Staff Engineer Samsung Electronics Co., Ltd. Date : 01/02/2026

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.elementkorea.kr Label Photographs and Location Label Label size：16*22mm

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Page 1 of 4 RF EXPOSURE EVALUATION Applicant : Samsung Electronics Co Ltd Applicant Address : 19 Chapin Rd, Building D. Pine Brook, New Jersey, United States Kind of Product : Wi-Fi/BT Transceiver Equipment Model name : WCH931M FCC ID : A3LWCH931M CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Page 2 of 4 Standard Requirement The following RF exposure procedures are applicable : - FCC Rules Part 1.1310 Radiofrequency radiation exposure limits Table 1 below sets forth limits for Maximum Permissible Exposure (MPE) to radiofrequency electromagnetic fields. Table 1—Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 ≤6 3.0-30 1 842/f 4.89/f *900/f 2 <6 30-300 61.4 0.163 1.0 <6 300-1,500 f/300 <6 1,500-100,000 5 <6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *100 <30 1.34-30 824/f 2.19/f *180/f 2 <30 30-300 27.5 0.073 0.2 <30 300-1,500 f/1 500 <30 1,500-100,000 1.0 <30 f = frequency in MHz * = Plane-wave equivalent power density CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Page 3 of 4 MPE Calculations The EUT will only be used with a separation of 20 centimeters or greater between the antenna and the body of the user. The MPE calculation for this exposure is shown below. The peak radiated output power (EIRP) is calculated as follows: EIRP = P + G Where, P = Power input to the antenna (mW) G = Power gain of the antenna (dBi) The numeric gain(G) of the antenna with a gain specified in dB is determined by: G = Log -1 (dB antenna gain / 10) Power density at the specific separation: S = PG/(4R 2 π) Where, S = Maximum power density (mW/cm 2 ) P = Power input to the antenna (mW) G = Numeric power gain of the antenna R = Distance to the center of the radiation of the antenna (20 cm = limit for MPE) Estimated safe separation: R = √(PG / 4π) Where, P = Power input to the antenna (mW) G = Numeric power gain of the antenna R = Distance to the center of the radiation of the antenna (20 cm = limit for MPE) CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Page 4 of 4 RF Exposure Results Mode Measured Max Output Power [dBm] G [dBi] Power Tolerance [dB] P [dBm] P [mW] R [cm] Power Density [mW/cm 2 ] Limit [mW/cm 2 ] BT 13.15 -3.30 +1.50 11.35 13.646 20.00 0.003 1.000 BLE 13.06 -3.30 +1.50 11.26 13.366 0.003 WLAN 2.4 GHz 17.54 3.72 +1.50 22.76 188.799 0.038 WLAN 5 GHz 16.94 3.51 +1.50 21.95 156.675 0.031 WLAN 6 GHz 14.06** - +1.50 15.56 35.975 0.007 * Note : Per KDB 662911, the MIMO directional gain is calculated using the following formula, Where G N is the gain of the nth antenna and N ANT , the total number of antennas used. Directional gain = 10 log[(10 G1/20 + 10 G2/20 + ... + 10 GN/20 ) 2 /N ANT ] dBi ** Measured Max Output Power is EIRP. Simultaneous Transmitter Results Mode P [mW] Power Density [mW/cm 2 ] Limit [mW/cm 2 ] BT 13.646 - - BLE 13.366 WLAN 2.4 GHz 188.799 WLAN 5 GHz 156.675 WLAN 6 GHz 35.975 Combined 408.461 0.081 1.000 -END-

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (134) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 Test Mode : Transmitter, 802.11b, ANT0, Worst Case(2 462 MHz) 1000.00 18000.00 2000.00 5000.00 10000.00 -20 120 -10 0 10 20 30 40 50 60 70 80 90 100 110 Frequency Level [M Hz] [dB(uV/m)] 18000.00 26500.00 20000.00 22500.00 25000.00 -20 120 -10 0 10 20 30 40 50 60 70 80 90 100 110 Frequency Level [M Hz] [dB(uV/m)] CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (135) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 Test Mode : Transmitter (Simultaneous transmissions DTS + 2.4 GHz + 6 GHz) The requirements are: Complies 1000.0018000.002000.005000.0010000.00 -20 120 -10 0 10 20 30 40 50 60 70 80 90 100 110 Frequency Level [M Hz] [dB(uV/m)] 18000.0026500.0020000.0022500.0025000.00 -20 120 -10 0 10 20 30 40 50 60 70 80 90 100 110 Frequency Level [M Hz] [dB(uV/m)] CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (136) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 Test Mode : Transmitter (802.11b, ANT0) The requirements are: Complies Ch.1(2 412 MHz) Frequency [MHz] (P) Reading [dBuV] c.f [dB(1/m)] Duty Cycle Factor [dB] Level PK [dBuV/m] Level AV [dBuV/m] Limit PK [dBuV/m] Limit AV [dBuV/m] Margin PK [dB] Margin AV [dB] Note 2 386.31 H 62.5 -4.6 ----- 57.90 ----- 74.00 ----- 16.10 ----- Peak 2 386.91 H 51.5 -4.6 0.00 ----- 46.90 ----- 54.00 ----- 7.10 Average 7 235.97 V 39.5 9.1 0.00 ----- 48.60 ----- 54.00 ----- 5.40 Average 7 236.92 H 36.8 9.1 0.00 ----- 45.90 ----- 54.00 ----- 8.10 Average 7 237.21 H 46.1 9.1 ----- 55.20 ----- 74.00 ----- 18.80 ----- Peak 7 237.21 V 48.4 9.1 ----- 57.50 ----- 74.00 ----- 16.50 ----- Peak Ch.7(2 442 MHz) Frequency [MHz] (P) Reading [dBuV] c.f [dB(1/m)] Duty Cycle Factor [dB] Level PK [dBuV/m] Level AV [dBuV/m] Limit PK [dBuV/m] Limit AV [dBuV/m] Margin PK [dB] Margin AV [dB] Note 4 883.64 H 53.2 3.5 ----- 56.70 ----- 74.00 ----- 17.30 ----- Peak 4 883.64 H 43.9 3.5 0.00 ----- 47.40 ----- 54.00 ----- 6.60 Average 7 324.93 V 38.3 9.1 0.00 ----- 47.40 ----- 54.00 ----- 6.60 Average 7 325.61 H 46.9 9.1 ----- 56.00 ----- 74.00 ----- 18.00 ----- Peak 7 326.97 H 37.1 9.1 0.00 ----- 46.20 ----- 54.00 ----- 7.80 Average 7 327.65 V 46.9 9.1 ----- 56.00 ----- 74.00 ----- 18.00 ----- Peak Ch.11(2 462 MHz) Frequency [MHz] (P) Reading [dBuV] c.f [dB(1/m)] Duty Cycle Factor [dB] Level PK [dBuV/m] Level AV [dBuV/m] Limit PK [dBuV/m] Limit AV [dBuV/m] Margin PK [dB] Margin AV [dB] Note 2 488.15 H 60.2 -4.2 ----- 56.00 ----- 74.00 ----- 18.00 ----- Peak 2 488.68 H 49.3 -4.1 0.00 ----- 45.20 ----- 54.00 ----- 8.80 Average 4 923.76 H 52.1 3.6 ----- 55.70 ----- 74.00 ----- 18.30 ----- Peak 4 923.76 H 44.7 3.6 0.00 ----- 48.30 ----- 54.00 ----- 5.70 Average 7 384.10 H 46.7 9.2 ----- 55.90 ----- 74.00 ----- 18.10 ----- Peak 7 384.78 H 35.9 9.2 0.00 ----- 45.10 ----- 54.00 ----- 8.90 Average 9 847.83 V 39.2 11.1 0.00 ----- 50.30 ----- 54.00 ----- 3.70 Average 9 848.51 V 45.9 11.1 ----- 57.00 ----- 74.00 ----- 17.00 ----- Peak Ch.12(2 467 MHz) Frequency [MHz] (P) Reading [dBuV] c.f [dB(1/m)] Duty Cycle Factor [dB] Level PK [dBuV/m] Level AV [dBuV/m] Limit PK [dBuV/m] Limit AV [dBuV/m] Margin PK [dB] Margin AV [dB] Note 2 483.52 H 55.1 -4.2 0.00 ----- 50.90 ----- 54.00 ----- 3.10 Average 2 483.62 H 63.5 -4.2 ----- 59.30 ----- 74.00 ----- 14.70 ----- Peak 2 484.22 V 49.3 -4.2 0.00 ----- 45.10 ----- 54.00 ----- 8.90 Average 2 484.33 H 55.9 -4.2 0.00 ----- 51.70 ----- 54.00 ----- 2.30 Average 2 485.87 H 61.2 -4.2 ----- 57.00 ----- 74.00 ----- 17.00 ----- Peak 4 933.96 H 51.4 3.7 ----- 55.10 ----- 74.00 ----- 18.90 ----- Peak 4 933.96 H 44.0 3.7 0.00 ----- 47.70 ----- 54.00 ----- 6.30 Average 7 399.74 H 35.7 9.2 0.00 ----- 44.90 ----- 54.00 ----- 9.10 Average 7 402.46 H 46.5 9.2 ----- 55.70 ----- 74.00 ----- 18.30 ----- Peak CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (137) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 Ch.13(2 472 MHz) Frequency [MHz] (P) Reading [dBuV] c.f [dB(1/m)] Duty Cycle Factor [dB] Level PK [dBuV/m] Level AV [dBuV/m] Limit PK [dBuV/m] Limit AV [dBuV/m] Margin PK [dB] Margin AV [dB] Note 2 485.38 H 61.2 -4.2 ----- 57.00 ----- 74.00 ----- 17.00 ----- Peak 2 485.52 V 51.3 -4.2 0.00 ----- 47.10 ----- 54.00 ----- 6.90 Average 2 485.69 H 55.8 -4.2 0.00 ----- 51.60 ----- 54.00 ----- 2.40 Average 4 944.16 H 50.7 3.8 ----- 54.50 ----- 74.00 ----- 19.50 ----- Peak 4 944.16 H 41.8 3.8 0.00 ----- 45.60 ----- 54.00 ----- 8.40 Average 4 944.16 V 48.5 3.8 ----- 52.30 ----- 74.00 ----- 21.70 ----- Peak Remarks 1. Measuring position : The Unwanted emission was measured in the following position: EUT stand-up position (Z axis), lie-down position (X,Y axis). The worst emission was found in lie-down position (Z axis) and the worst case was recorded. 2. Peak result = Reading + c.f (Correction factor) Average result = Reading + c.f (Correction factor) + Duty Cycle Factor 3. Correction factor = Antenna factor + Cable loss - Amp gain 4. The 18 GHz end had no signal detected. As can be seen from the conducted spurious emission test, no signal was detected in the section. CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (138) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 Test Mode : Transmitter (802.11b, ANT1) The requirements are: Complies Ch.1(2 412 MHz) Frequency [MHz] (P) Reading [dBuV] c.f [dB(1/m)] Duty Cycle Factor [dB] Level PK [dBuV/m] Level AV [dBuV/m] Li…

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CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (76) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11b, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (77) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11b, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (78) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11b, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (79) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11g, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (80) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11g, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (81) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11g, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (82) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11g, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (83) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11n_HT20, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (84) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11n_HT20, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (85) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11n_HT20, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (86) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11n_HT20, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (87) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11ax_HE20_26T_Low, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (88) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11ax_HE20_26T_Low, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (89) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11ax_HE20_26T_Low, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (90) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11ax_HE20_26T_Low, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (91) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11ax_HE20_26T_Mid, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (92) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11ax_HE20_26T_Mid, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (93) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11ax_HE20_26T_Mid, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (94) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11ax_HE20_26T_Mid, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (95) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11ax_HE20_26T_High, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (96) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT0, 802.11ax_HE20_26T_High, Spurious CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (97) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11ax_HE20_26T_High, Band-edge CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (98) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 ANT1, 802.11ax_HE20_26T_High, Spurious CTK Co., Ltd. (Ho-dong),…

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TEST REPORT CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (1) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 1. Applicant ◦ Name : Samsung Electronics Co Ltd ◦ Address : 19 Chapin Rd, Building D. Pine Brook, New Jersey, United States ◦ Date of Receipt : 2025-10-22 2. Manufacturer ◦ Name : Samsung Electronics Co Ltd 3. Use of Report : For FCC Conformance 4. Test sample / Model : Wi-Fi/BT Transceiver / WCH931M 5. Date(s) of test : 2025-12-05 to 2026-01-03 6. Test Standard (Method) used : FCC 47 CFR part 15 subpart C 15.247 7. Testing Environment : Refer to 8 page 8. Test Results : Compliance 9. Location of Test : Permanent Testing Lab On Site Testing (Address : (Unhak-Dong) 5, 221 beon-gil, Dongbu-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Republic of Korea) The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This report cannot be reproduced or copied without the written consent of CTK Approval Tested by: Seong-uk Park (Signature) Technical Manager: Bong-seok Kim (Signature) 2026-01-07 CTK Co., Ltd. CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (2) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 REPORT REVISION HISTORY Date Revision Page No 2026-01-07 Issued (CTK-2026-00062) all This report shall not be reproduced except in full, without the written approval of CTK Co., Ltd. This document may be altered or revised by CTK Co., Ltd. personnel only, and shall be noted in the revision section of the document. Any alteration of this document not carried out by CTK Co., Ltd. will constitute fraud and shall nullify the document. CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (3) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 CONTENTS 1. General Product Description ............................................................................................. 4 1.1 Applicant Information ............................................................................................... 4 1.2 Manufacturer Information .......................................................................................... 4 1.3 Product Information ................................................................................................ 5 1.4 Peripheral Devices ................................................................................................. 6 1.5 Model Differences .................................................................................................. 6 2. Accreditations .............................................................................................................. 7 2.1 Laboratory Accreditations and Listings .......................................................................... 7 2.2 Calibration Details of Equipment used for Measurement .................................................... 7 3. Test Specifications ......................................................................................................... 8 3.1 Standards ............................................................................................................ 8 3.2 Testing Environment ............................................................................................... 8 3.3 Mode of Operation during the Test ............................................................................... 9 3.4 Device Modifications ............................................................................................. 11 3.5 Measurement Uncertainty ....................................................................................... 11 3.6 Test Software ...................................................................................................... 11 4. Technical Characteristic Test ........................................................................................... 12 4.1 6 dB Bandwidth ................................................................................................... 12 4.2 Output Power ...................................................................................................... 28 4.3 Transmitter Power Spectral Density ........................................................................... 43 4.4 Conducted Spurious Emission ................................................................................. 74 4.5 Radiated Emission .............................................................................................. 123 4.6 AC Conducted Emissions ...................................................................................... 154 APPENDIX A – Test Equipment Used For Tests ...................................................................... 156 CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00062 Page (4) / (156) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 1. General Product Description 1.1 Applicant Information Company Samsung Electronics Co Ltd Contact Point 19 Chapin Rd, Building D. Pine Brook, New Jersey, United States Contact Person Name : Minhyung Cho E-mail : [email protected] Tel : +82-31-277-2688 Fax : - 1.2 Manufacturer Information Manufacturer Samsung Electronics Co Ltd Address 129, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Republic of Korea Factory #1 XUGUANG TECHNOLOGY (VIETNAM) COMPANY LIMITED Address Factory No.4, Lot CN1, An Duong Industrial Park, Hong Phong Commune, An Duong District, Hai Phong City, Vietnam Factory #2 Chengdu Xuguang Technology Co., Ltd. Address Building 1, Floors 1-2 and Building 2, Wenbai Avenue No.998, Baihe Street, Economic and Technological Deve…

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TEST REPORT CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 REPORT No.: CTK-2026-00061 Page (1) / (34) Pages [QF-QP15-07] Ver.03 Project Number: CTK-K-2025-05505 1. Applicant ◦ Name : Samsung Electronics Co Ltd ◦ Address : 19 Chapin Rd, Building D. Pine Brook, New Jersey, United States ◦ Date of Receipt : 2025-10-22 2. Manufacturer ◦ Name : Samsung Electronics Co Ltd 3. Use of Report : For FCC Conformance 4. Test sample / Model : Wi-Fi/BT Transce…

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