2AR8X-CMHS-DDongle

Cooler Master Technology Inc. Covered Equipment Certification Attestation Letter 2024-08-09 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID:2AR8X-CMHS-D Cooler Master Technology Inc. (“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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Cooler Master Technology Inc. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Monica Chiu Title: IO-CGP PM Company Name: Cooler Master Technology Inc. Address: 7F., No.398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Phone: +886-2-2225-3517 E-Mail: [email protected] Date: 2024-08-09

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: CMI USA FRN: 0033947839 Contact Name: Andrew Ng Address: 1N. Indian Hill Boulevard, Suite #d200, Claremont, CA 91711 Telephone No: (909) 673-9880 Email: [email protected] Applicant: Company name: Cooler Master Technology Inc. Product Description: Dongle Grantee code: 2AR8X FCC ID: 2AR8X-CMHS-D FRN：0028111367 Contact Name: Monica Chiu Address: 7F., No.398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Telephone No: +886-2-2225-3517 Email: [email protected] Cooler Master Technology Inc. certifies that, as of the date of this filing of the application with the TCB, [CMI USA] is our designated US agent for service of process for the above referenced FCC ID. Cooler Master Technology Inc. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [CMI USA] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2024-08-09 Applicant’s Name: Monica Chiu US Agent’s Name: Andrew Ng Title: IO-CGP PM Title: Manager Signature： Signature: Andrew Ng

Cooler Master Technology Inc. 2024-08-09 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 AUTHORITY TO ACT AS AGENT - FCC On our behalf, I appoint Damon Hu, Guangdong Dongdian Testing Service Co.,Ltd.( Unit 2, Building 1, No.17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808), to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in FCC regulations will have affixed to it a label identical to that submitted for approval with this application. In signing this letter, Applicant certifies that neither the applicant nor any party to the application is not subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko North America Inc., still resides still resides with us. Sincerely, Printed name: Monica Chiu Title: IO-CGP PM Company Name: Cooler Master Technology Inc. Address: 7F., No.398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Phone: +886-2-2225-3517 E-Mail: [email protected] Date: 2024-08-09

Cooler Master Technology Inc. 2024-08-09 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY – FCC FCC ID: 2AR8X-CMHS-D Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of insert number of 180 days (cannot exceed 180 days) days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☒ Short Term Internal Photos ☐ Permanent* ☒ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☒ Short Term User’s Manual ☐ Permanent* ☒ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Monica Chiu Title: IO-CGP PM Company Name: Cooler Master Technology Inc. Address: 7F., No.398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Phone: +886-2-2225-3517 E-Mail: [email protected] Date: 2024-08-09

CH351 A CH351_Dongle_Laser Engraving 鐳雕範圍 11.22mm 22.26mm 整體雷雕上下左右置中於產品 20240705

5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 1 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com Product Name: WiFi/Bluetooth Chip Antenna – CW201 Part Number: H2U34C1H1B0100 Features:  Supporting WiFi/Bluetooth, covering 2400 to 2484 MHz  Surface Mount  Dimensions: 2.0 x 1.2 x 0.6 mm  High performance, small size.  RoHS & REACH & HF Compliant  AEC-Q200 Compliant Applications:  ISM 2.4 GHz applications  ZigBee/BLE applications  Bluetooth earphone systems  Hand-held devices when WiFi / Bluetooth functions are needed, e.g., Smart phones  IEEE802.11 b/g/n 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 2 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com WiFi/Bluetooth Chip Antenna MODEL: CW201 Version: A I. Specifications: Mechanical Specifications Dimensions (mm) 2.0 (L) x 1.2 (W) x 0.6 (H) Material Ceramic Termination Ag (environmental Pb free) Environmental Conditions Operation & Storage Temperature ( o C) -40 ~ +105 Storage Temperature ( o C) (Antenna with packing sealed) -5 ~ +40 Relative Humidity 10 ~ 70 % Items Specifications Frequencies (MHz) 2400~2484 Return loss (dB) < -10 Typ. Efficiency (%) 62.9 Typ. Average Gain (dB) -2.0 Typ. Peak Gain (dBi) @2442MHz 2.0 Typ. Test Condition 40 x 20 mm² (Evaluation board) Impedance (Ω) 50 Polarization Linear Polarization 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 3 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com II. Layout Guide: Solder Land Pattern: The solder land pattern (gold marking areas) is shown below. Recommendation on matching circuit will be provided according to customer’s installation conditions. Grounding Pin Signal Input Transmission Line with 50Ω Impedance Characteristic Top View Bottom View 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 4 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com III. Mechanical Dimensions: a) Antenna Dimensions b) PIN Definition PIN 1 2 Soldering Pad Signal Input Tuning/Signal Output TOP View Bottom View Side View Unit: mm Unit: mm 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 5 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com c) Test Board with Antenna Unit: mm 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 6 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com IV. Properties: a) Return loss (dB) b) Efficiency (%) 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 7 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com c) Average Gain (dB) d) Peak Gain (dBi) 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 8 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com V. Antenna Radiation Pattern Measurement: The antenna radiation patterns are measured in Unictron’s 3D Anechoic Chamber. The measurement setup is as show below. Frequency (MHz) 2400 2410 2415 2420 2425 2430 2435 2440 2442 2450 Efficiency (dB) -2.6 -2.5 -2.3 -2.1 -2.1 -2.1 -2.1 -2.0 -2.0 -2.1 Efficiency (%) 54.6 55.7 59 61.7 62.2 61.2 62.2 63.4 62.9 61.9 Peak Gain (dBi) 0.7 0.8 1.2 1.5 1.7 1.7 1.8 1.9 2 2 Frequency (MHz) 2455 2460 2465 2475 2485 Efficiency (dB) -2.1 -2.2 -2.2 -2.5 -2.7 Efficiency (%) 61.2 60.1 59.6 55.8 54 Peak Gain (dBi) 2.1 2.1 2.4 2.1 2.1 Z Y X 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 9 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com 3D Radiation Gain Pattern 2450 MHz (unit: dBi) X Y Z 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 10 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com VI. Frequency tuning: System Matching Circuit Component Location Description Vendor Tolerance 1 N/C - - 2 5.0 pF (0402) MURATA ± 0.05 pF 3 0.8 pF (0402) MURATA ± 0.05 pF 4 2.7 pF (0201) MURATA ± 0.05 pF DC Block 22 pF (0402) MURATA ±5% 1 3 2 DC Block 4 5F., No. 83, Kewang Rd., Longtan Dist., Taoyuan City 32556, Taiwan (R.O.C.) Tel: 886-3-4072728｜Fax: 886-3-4072738 ｜https://www.unictron.com 11 www.etek.com.tw © Unictron Technologies Corp . All specifications subject to change without noti ce. www.sanav.com www.unictron.com VII. Soldering conditions: Typical Soldering Profile for Lead-free Process VIII. Reminders for use of Unictron’s ceramic chip antennas: a) This chip antenna is made of ceramic materials which is relatively more rigid and brittle compared to circuit board materials. Furthermore, the length of this antenna is quite long. Bending of circuit board at the locations where chip antenna is mounted may cause th…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E10 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 1 of 6 RF EXPOSURE REPORT Applicant : Cooler Master Technology Inc. Address of Applicant : 7F., No.398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Manufacturer : Dong Guan IONE Electronic Technology Co., Ltd. Address of Manufacturer : Building 3 No.76, Yongjun 2nd, Road, HuangJiang Town, DongGuan City, GuangDong Province, China Equipment under Test : Dongle Model No. : CMHS-D FCC ID : 2AR8X-CMHS-D Test Standard(s) : KDB447498 D01 General RF Exposure Guidance v06 Report No. : DDT-RE24050708-2E10 Issue Date : 2024/08/14 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E10 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 2 of 6 Table of Contents 1. General Test Information .............................................................................................. 5 1.1. Description of EUT ........................................................................................................ 5 1.2. Accessories of EUT ...................................................................................................... 5 1.3. Test laboratory .............................................................................................................. 5 2. RF Exposure evaluation for FCC.................................................................................. 6 2.1. Assessment procedure ................................................................................................. 6 2.2. Assess result ................................................................................................................. 6 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E10 Page 3 of 6 Test Report Declare Applicant : Cooler Master Technology Inc. Address of Applicant : 7F., No.398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Equipment under Test : Dongle Model No. : CMHS-D Manufacturer : Dong Guan IONE Electronic Technology Co., Ltd. Address of Manufacturer : Building 3 No.76, Yongjun 2nd, Road, HuangJiang Town, DongGuan City, GuangDong Province, China Test Standard Used: KDB447498 D01 General RF Exposure Guidance v06 We Declare: The equipment described above is tested by Guangdong Dongdian Testing Service Co., Ltd. and in the configuration tested the equipment complied with the standards specified above. The test results are contained in this test report and Guangdong Dongdian Testing Service Co., Ltd. is assumed of full responsibility for the accuracy and completeness of these tests. Report No.: DDT-RE24050708-2E10 Date of Receipt: 2024/07/16 Date of Test: 2024/07/16~2024/08/07 Prepared By: Approved By: _____________________ ______________________ Bobo Chen/Engineer Damon Hu/EMC Manager Note: This report applies to above tested sample only. This report shall not be reproduced in parts without written approval of Guangdong Dongdian Testing Service Co., Ltd. Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E10 Page 4 of 6 Revision History Rev. Revisions Issue Date Revised By --- Initial issue 2024/08/14 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E10 Page 5 of 6 1. General Test Information 1.1. Description of EUT EUT Name : Dongle Model Number : CMHS-D EUT Function Description : Please reference user manual of this device Power Supply : DC 5V Note: The above EUT information is declared by manufacturer and for more detailed features description please refer to the manufacturer's specifications or User's Manual. The above Antenna information is declared by manufacturer and for more detailed features description please refer to the manufacturer's specifications, the laboratory shall not be held responsible. “☒” means to be chosen or applicable; “☐” means don’t to be chosen or not applicable; This note applies to entire report. 1.2. Accessories of EUT Accessories Manufacturer Model number Description Gaming Headset Dong Guan IONE Electronic Technology Co., Ltd. CH351 / 1.3. Test laboratory Guangdong Dongdian Testing Service Co., Ltd. Add.: Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808. Tel.: +86-0769-38826678, http://www.dgddt.com, Email: [email protected]. CNAS Accreditation No. L6451; A2LA Accreditation Number: 3870.01 FCC Designation Number: CN1182, Test Firm Registration Number: 540522 Innovation, Science and Economic Development Canada Site Registration Number: 10288A Conformity Assessment Body identifier: CN0048 VCCI facility registration number: C-20087, T-20088, R-20123, R-20155, G-20118 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E10 Page 6 of 6 2. RF Exposure evaluation for FCC 2.1. Assessment procedure According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison 2.2. Assess result Worse case is as below: [2402 MHz, 6.35 dBm, (4.32 mW) output power] (4.32/5) ·[√2.402(GHz)] = 1.339< 3.0 for 1-g SAR Then SAR evaluation is not required. Note: Ant1 and Ant2 don’t support synchronous transmission. -----------------------End Report----------------------

Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E06 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 1 of 74 FCC CERTIFICATION TEST REPORT Applicant : Cooler Master Technology Inc. Address of Applicant : 7F., No.398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Manufacturer : Dong Guan IONE Electronic Technology Co., Ltd. Address of Manufacturer : Building 3 No.76, Yongjun 2nd, Road, HuangJiang Town, DongGuan City, GuangDong Province, China Equipment under Test : Dongle Model No. : CMHS-D FCC ID : 2AR8X-CMHS-D Test Standard(s) : FCC Rules and Regulations Part 15 Subpart C, ANSI C63.10:2013 Report No. : DDT-RE24050708-2E06 Issue Date : 2024/08/07 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E06 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 2 of 74 Table of Contents 1. Summary of Test Results ............................................................................................. 6 2. General Test Information .............................................................................................. 7 2.1. Description of EUT ........................................................................................................ 7 2.2. Accessories of EUT ...................................................................................................... 7 2.3. Block diagram of EUT configuration for test ................................................................. 8 2.4. Decision of final test mode ........................................................................................... 8 2.5. Deviations of test standard ........................................................................................... 8 2.6. Test environment conditions ......................................................................................... 8 2.7. Test laboratory .............................................................................................................. 9 2.8. Measurement uncertainty ............................................................................................. 9 3. Equipment Used During Conductive Test .................................................................. 10 4. 6 dB Bandwidth ........................................................................................................... 11 4.1. Block diagram of test setup ........................................................................................ 11 4.2. Limits ........................................................................................................................... 11 4.3. Test procedure ............................................................................................................ 11 4.4. Test result ................................................................................................................... 12 4.5. Test graphs ................................................................................................................. 13 6. Maximum Peak Output Power .................................................................................... 15 6.1. Block diagram of test setup ........................................................................................ 15 6.2. Limits ........................................................................................................................... 15 6.3. Test procedure ............................................................................................................ 15 6.4. Test result ................................................................................................................... 16 6.5. Test graphs ................................................................................................................. 17 7. Power Spectral Density .............................................................................................. 19 7.1. Block diagram of test setup ........................................................................................ 19 7.2. Limits ........................................................................................................................... 19 7.3. Test procedure ............................................................................................................ 19 7.4. Test result ................................................................................................................... 20 7.5. Test graphs ................................................................................................................. 21 8. Band Edge Compliance (Conducted Method) ............................................................ 23 8.1. Block diagram of test setup ........................................................................................ 23 8.2. Limits ........................................................................................................................... 23 8.3. Test procedure ............................................................................................................ 23 8.4. Test result ................................................................................................................... 24 8.5. Test graphs ................................................................................................................. 25 9. RF Conducted Spurious Emissions ............................................................................ 27 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24050708-2E06 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 3 of 74 9.1. Block diagram of test setup ........................................................................................ 27 9.2. Limits ................................................................................................…

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