2AR8XZHHN1NWT1MasterFan M/A Series & Wireless Controller

(Cooler Master Technology Inc.) (Jul. 06, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for( FCC ID:2AR8XZHHN1NWT1) [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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, signature (Cooler Master Technology Inc.) (Jul. 06, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID:2AR8XZHHN1NWT1) [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. Sincerely, signature

Cooler Master Technology Inc. (Jul. 06, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR MasterFan M/A Series & Wireless Controller / MFZ-ZHHN-1NWN1-T1/ FCC ID: 2AR8XZHHN1NWT1) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the (Block diagram, Operational description, Schematics) required to be submitted with this application be permanently withheld from public review. These documents contain detailed system and equipment description and related information about the product which Cooler Master Technology Inc. considers to be proprietary, confidential and a custom design and otherwise would not release to the general public. Since the design is a basis from which future technological products will evolve, Cooler Master Technology Inc. considers that this information would be of benefit to its competitors and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Name: Niko Yang Title: Safety Engineer Signature of applicant:

Cooler Master Technology Inc. (Jul. 06, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Cerpass Technology Corporation(Cerpass Laboratory)) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name: Niko Yang Title: Safety Engineer Signature of applicant:

CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 1 of 6 EXTERNAL PHOTOGRAPHS OF EUT 1) EUT Photo 2) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 2 of 6 3) EUT Photo 4) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 3 of 6 5) EUT Photo 6) EUT Photo Label Location CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 4 of 6 MFZ-P2NA-40NPK-R1 7) EUT Photo 8) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 5 of 6 MFZ-P4NA-30NPK-R1 9) EUT Photo 10) EUT Photo CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 6 of 6 MFZ-ZHHN-1NWN1-R1 11) EUT Photo 12) EUT Photo

CERPASS TECHNOLOGY CORP. Report No.:26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 1 of 2 INTERNAL PHOTOGRAPHS OF EUT 1) EUT Photo 2) EUT Photo CERPASS TECHNOLOGY CORP. Report No.:26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 2 of 2 3) EUT Photo 4) EUT Photo Antenna RF Chip

CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC02 Cerpass Technology Corp. Issued date : May 25, 2026 D-FD-511-0 V1.1 Page No. : 1 of 6 FCC RF EXPOSURE REPORT Applicant : Cooler Master Technology Inc. Address : 7F., No. 398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Equipment : MasterFan M/A Series & Wireless Controller Model No. : MFZ-ZHHN-1NWN1-T1 Trade Name : Cooler Master FCC ID : 2AR8XZHHN1NWT1 I HEREBY CERTIFY THAT: The sample was received May 22, 2026 and the testing was completed on May 25, 2026 at Cerpass Technology Corp. The test result refers exclusively to the test presented test model / sample. Without written approval of Cerpass Technology Corp., the test report shall not be reproduced except in full. Approved by: Leevin Li / Supervisor CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC02 Cerpass Technology Corp. Issued date : May 25, 2026 D-FD-511-0 V1.1 Page No. : 2 of 6 Contents 1. Test Configuration of Equipment under Test ........................................................................................... 4 1.1 Feature of Equipment ............................................................................................................................... 4 1.2 General Information of Test ....................................................................................................................... 5 2. Radio Frequency Exposure ....................................................................................................................... 6 2.1 Applicable Standards ................................................................................................................................ 6 2.2 Limit.................................................................................................................................6 2.3 Test Results ............................................................................................................................................... 6 CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC02 Cerpass Technology Corp. Issued date : May 25, 2026 D-FD-511-0 V1.1 Page No. : 3 of 6 History of this test report Version No. Report No Date Description Rev.01 26050200-DRFCC02 May 25, 2026 Initial Issue CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC02 Cerpass Technology Corp. Issued date : May 25, 2026 D-FD-511-0 V1.1 Page No. : 4 of 6 1. Test Configuration of Equipment under Test 1.1 Feature of Equipment Equipment MasterFan M/A Series & Wireless Controller Model Name MFZ-ZHHN-1NWN1-T1 Model Discrepancy N/A Frequency Range 2402MHz-2480MHz Modulation Type 2.4G SRD: GFSK Data Rate GFSK: 1Mbps EUT Power Rating: DC 12V Note: For more details, please refer to the User’s manual of the EUT. Accessories: Equipment Model Name MasterFan M/A Series & Wireless Controller (Optional) MFZ-P2NA-40NPK-R1 MasterFan M/A Series & Wireless Controller (Optional) MFZ-P4NA-30NPK-R1 MasterFan M/A Series & Wireless Controller MFZ-ZHHN-1NWN1-R1 CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC02 Cerpass Technology Corp. Issued date : May 25, 2026 D-FD-511-0 V1.1 Page No. : 5 of 6 1.2 General Information of Test Test Site Cerpass Technology Corporation(Cerpass Laboratory) Address: Room 102, No. 5, Xing'an Road, Chang'an Town, Dongguan City, Guangdong Province Tel: +86-769-8547-1212 Fax: +86-769-8547-1912 FCC Designation No.: CN1288 Frequency Range Investigated: Conducted: from 150kHz to 30 MHz Radiation: from 9kHz to 40,000MHz Test Distance: The test distance of radiated emission from antenna to EUT is 3 M. CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC02 Cerpass Technology Corp. Issued date : May 25, 2026 D-FD-511-0 V1.1 Page No. : 6 of 6 2. Radio Frequency Exposure 2.1 Applicable Standards The measurements shown in this test report were made in accordance with the procedures given in FCC Part 2 (Section 2.1093) 2.2 Limit KDB 447498 D01 § 4.3(a) For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 *The values 3.0 and 7.5 are referred to as numeric thresholds in step b) below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm, and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 4.1 f) is applied to determine SAR test exclusion 2.3 Test Results According to the KDB447498: The SAR test exclusion thresholds Level: [(max. power of channel, including tune-up tolerance, mW) /(min. test separation distance, mm)] * sqrt (freq. in GHz) < 3 Calculation Channel Measured power (dBm) Tuneuptolerance (dBm) Max.TuneupPower (dBm) Peak output power (mW) Distance (mm)Calculation resultsLimit 2.48-0.12-0.12 ±10.881.22461619950.38573 Then SAR evaluation is not required ----------THE END OF REPORT----------

无源测试：驻波比（Passive test: VSWR

CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC01 Cerpass Technology Corp. Issued Date : May 25, 2026 D-FD-506-0 V1.1 Page No. : 1 of 42 FCC RADIO TEST REPORT Applicant : Cooler Master Technology Inc. Address : 7F., No. 398, Xinhu 1st Rd., Neihu Dist., Taipei City 114065, Taiwan Equipment : MasterFan M/A Series & Wireless Controller Model No. : MFZ-ZHHN-1NWN1-T1 Trade Name : Cooler Master FCC ID : 2AR8XZHHN1NWT1 Standard : FCC part 15 Subpart C §15.247 I HEREBY CERTIFY THAT: The sample was received on May 22, 2026 and the testing was completed on May 25, 2026 at Cerpass Technology Corp. The test result refers exclusively to the test presented test model / sample. Without written approval of Cerpass Technology Corp., the test report shall not be reproduced except in full. Approved by: Leevin Li /Supervisor CERPASS TECHNOLOGY CORP. Report No.: 26050200-DRFCC01 Cerpass Technology Corp. Issued Date : May 25, 2026 D-FD-506-0 V1.1 Page No. : 2 of 42 Contents 1. Summary of Test Procedure and Test Results ................................................................................ 5 1.1 Applicable Standards ................................................................................................................. 5 2. Test Configuration of Equipment under Test ................................................................................... 6 2.1 Feature of Equipment under Test ............................................................................................... 6 2.2 Carrier Frequency of Channels .................................................................................................. 7 2.3 Test Mode and Test Software ..................................................................................................... 8 2.5 Description of Test System ......................................................................................................... 9 2.6 General Information of Test ...................................................................................................... 10 2.7 Measurement Uncertainty ........................................................................................................ 10 3. Test Equipment and Ancillaries Used for Tests ............................................................................. 11 4. Antenna Requirements ..................................................................................................................... 13 4.1 Standard Applicable ................................................................................................................. 13 4.2 Antenna Construction and Directional Gain ............................................................................. 13 5. Test of Conducted Emission ............................................................................................................ 14 5.1 Test Limit .................................................................................................................................. 14 5.2 Test Procedures ....................................................................................................................... 14 5.3 Typical Test Setup .................................................................................................................... 15 5.4 Test Result and Data ................................................................................................................ 16 6. Test of Spurious Emission (Radiated) ............................................................................................ 18 6.1 Test Limit .................................................................................................................................. 18 6.2 Test Procedures ....................................................................................................................... 18 6.3 Typical Test Setup .................................................................................................................... 19 6.4 Test Result and Data (9kHz ~ 30MHz) .................................................................................... 20 6.5 Test Result and Data (30MHz ~ 1GHz) ................................................................................... 20 6.6 Test Result and Data (1GHz ~ 25GHz) .................................................................................... 22 6.7 Restricted Bands of Operation ................................................................................................. 28 7. Test of Spurious Emission (Conducted)......................................................................................... 33 7.1 Test Limit .................................................................................................................................. 33 7.2 Test Procedure ......................................................................................................................... 33 7.3 Test Setup Layout .................................................................................................................... 33 7.4 Test Result and Data ................................................................................................................ 33 8. On Time, Duty Cycle and Measurement methods ......................................................................... 35 8.1 Test Limit .................................................................................................................................. 35 8.2 Test Procedure ......................................................................................................................... 35 8.3 Test Setup Layout .................................................................................................................... 35 8.4 Test Result and Data ................................................................................................................ 36 9. 6dB Bandwidth Measurement Data ................…

Text truncated - open the document above for the full version.

CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 1 of 2 TEST SETUP PHOTOGRAPHS OF EUT AC POWER LINE CONDUCTED EMISSION TEST Front View Side View CERPASS TECHNOLOGY CORP. Report No.: 26050200 CERPASS TECHNOLOGY CORP. Issued date : May 25, 2026 Page No. : 2 of 2 RADIATED EMISSION TEST Below 1GHz Above 1GHz