2AXUD-KB5NucBox5

2反面 Technical specifications Note: The pictures listed in this manual are for reference only. Product specifications/button definitions and appearance are subject to change without notice. CPU GPU RAM Storage Ethernet Network Charger Packing list BT WiFi Intel Jasper Lake N5105, 10 nm process, 4- Core 4 threads, main frequency 2.0Ghz (up) (Up to 2.90GHz), TPD 10W, cache 4 MB Intel® UHD Graphics 8GB 128GB/256GB/512GB SSD, M.2 2242(Product capacity is subject to actual purchase), support MicroSD expansion up to 128GB Giga LAN(RJ45)*1,1000M IEEE 802 11 a/b/g/n/ac BT5.2 TYPE-C 12V 3A（DC IN ONLY） 1* mini PC+1* user manual/warranty card +1*TYPE-C charger 3正面 Entitled 12-month warranty for the product quality problems caused by non-human factors. Certificate/Inspected Warranty commitment Company: Shenzhen GMK Technology Co., Ltd. Address: 3/F, #5 Bldg, Yifenghua Industrial Park, Huaning Rd, Longhua Dist, 518109, Shenzhen, China 2正面 Please familiarize yourself with the interface and buttons of the device before use. About the Device 1反面 Safety warnings and precautions 3反面 1正面 GMKtec NUCBOX5 USER MANUAL Before using and operating this equipment, please read and observe the following precautions carefully to avoid dangerous or illegal operations. Use environment Do not use the device in dusty and humid places to avoid causing internal circuit failures; Do not place this equipment near heating objects such as electric heaters; The working temperature of this equipment is 0-40 degrees, and the normal working temperature is 10-90% RH. Power Please use the special charger that comes standard with this product; Waterproof This device is not waterproof, please keep it dry; Maintenance For all maintenance services, please contact the dealer’ maintenance personnel; Do not insert any sharp objects into the device; Do not drop or bump the device to avoid damage to the device. s POWER Type-c (DC IN ONLY) Headphone plug Giga LAN(RJ45) HDMI 4K/60Hz USB 3.2*2 USB 3.2 HD This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter. Radiation Exposure Statement To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance of 20cm from your body.

Shenzhen GMK Technology Co., Ltd 3/F, #5Bldg, HuaLian Industrial Park, XinShi Community, Dalang St, Longhua Dist, 518109, Shenzhen, China Agent Authorization Company: Shenzhen GMK Technology Co., Ltd Address: 3/F, #5Bldg, HuaLian Industrial Park, XinShi Community, Dalang St, Longhua Dist, 518109, Shenzhen, China Product Name: NucBox5 Model Number(s): KB5 Product Description: NucBox5 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022/4/11 Name: Jerome Chung Title: Engineer Company: Shenzhen GMK Technology Co., Ltd

Shenzhen GMK Technology Co., Ltd 3/F, #5Bldg, HuaLian Industrial Park, XinShi Community, Dalang St, Longhua Dist, 518109, Shenzhen, China Page 1 of 2 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022/4/10 Subject; Request for Confidentiality FCC ID: 2AXUD-KB5 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Declaration Letter of Software Security Requirements Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. Shenzhen GMK Technology Co., Ltd 3/F, #5Bldg, HuaLian Industrial Park, XinShi Community, Dalang St, Longhua Dist, 518109, Shenzhen, China Page 2 of 2 It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Jerome Chung Title: Engineer

Shenzhen Tongzhou Testing Co.,Ltd. FCC ID:2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd. Page 1 of 3 EXTERIOR PHOTOGRAPHS OF EUT External Photos Shenzhen Tongzhou Testing Co.,Ltd. FCC ID:2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd. Page 2 of 3 Shenzhen Tongzhou Testing Co.,Ltd. FCC ID:2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd. Page 3 of 3

Label & Label Location Size:55mm(L)*36mm(W) FCC ID: 2AXUD-KB5

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 8 INTERIOR PHOTOGRAPHS OF EUT Internal Photos Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 8 WIFI Main/Bluetooth Antenna 1 WIFI AUX Antenna 2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 5 of 8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 6 of 8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 7 of 8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 8 of 8

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 9 Maximum Permissible Exposure Report Product Information EUT : NucBox5 Model Number : KB5 Model Declaration : N/A Test Model : KB5 Power Supply : DC 19V by adapter Hardware version : IP3_APB20_MB_V11_20210814A Software version : Windows 11 Pro Sample ID : TZ220102886–2#&TZ220102886–4# Bluetooth Bluetooth Version : V4.2 Channel Number : 79 Channels for Bluetooth BR/EDR(DSS) 40 Channels for BLE (DTS) Modulation Technology : GFSK, π/4-DQPSK, 8-DPSK for Bluetooth BR/EDR (DSS) GFSK for BLE (DTS) Data Rates : Bluetooth BR/EDR (DSS): 1/2/3Mbps BLE (DTS): 1Mbps Antenna Type And Gain : Internal Antenna 1: 1.26dBi WiFi WLAN : Supported IEEE 802.11a/b/g/n/ac WLAN FCC Operation Frequency : IEEE 802.11b:2412-2462MHz IEEE 802.11g:2412-2462MHz IEEE 802.11n HT20:2412-2462MHz / 5180-5240MHz IEEE 802.11n HT40: 2422-2452MHz / 5190-5230MHz IEEE 802.11a: 5180-5240MHz IEEE 802.11ac VHT20: 5180-5240MHz IEEE 802.11ac VHT40: 5190-5230MHz IEEE 802.11ac VHT80: 5210MHz WLAN Modulation Technology : IEEE 802.11b: DSSS(CCK,DQPSK,DBPSK) IEEE 802.11g: OFDM (64QAM, 16QAM, QPSK, BPSK) IEEE 802.11n: OFDM (64QAM, 16QAM, QPSK, BPSK) IEEE 802.11a: OFDM (64QAM, 16QAM, QPSK, BPSK) IEEE 802.11ac: OFDM (256QAM, 64QAM, 16QAM, QPSK, BPSK) Antenna Type And Gain : Antenna 1: 1.26dBi(Max.), for TX/RX (WLAN 2.4G Band) 1.93dBi(Max.), for TX/RX (WLAN 5.2G Band) Antenna 2: 0.5dBi(Max.), for TX/RX (WLAN 2.4G Band) 0.49dBi(Max.), for TX/RX (WLAN 5.2G Band) 802.11n/ac support 2T2R.[Antenna 1 and Antenna 2] Note: Antenna position refer to EUT Photos. Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 9 2. Evaluation Method Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with. In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modelled or measured field strengths or power density, is ≤ 1.0. The MPE ratio of each antenna is determined at the minimum test separation distance required by the operating configurations and exposure conditions of the host device, according to the ratio of field strengths or power density to MPE limit, at the test frequency. Either the maximum peak or spatially averaged results from measurements or numerical simulations may be used to determine the MPE ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on far-field plane-wave equivalent conditions. The antenna installation and operating requirements for the host device must meet the minimum test separation distances required by all antennas, in both standalone and simultaneous transmission operations, to satisfy compliance. Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 9 3. Limit 3. 1 Refer evaluation method ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB publication 447498 D01 General 1 RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices 3. 2 Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 4. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 5. Antenna Information This Product can only use antennas certificated as follows provided by manufacturer; Antenna Gain and type refer to Product information Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 9 6. Conducted Power 2.4G Band: Bluetooth(BDR+EDR) TestMode Antenna Channel Result[dBm] DH5 Ant1 2402 -0.67 2441 -1.17 2480 -2.67 2DH5 Ant1 2402 0.37 2441 -0.01 2480 -1.61 3DH5 Ant1 2402 0.72 2441 0.22 2480 -1.06 Bluetooth(BLE) TestMode Antenna Channel Result[dBm] BLE_1M Ant1 2402 -0.68 2440 -1.17 2480 -2.7 WiFi 2.4GHz Band TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict 11B Ant1 2412…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 1 of 35 RF Test Data for BT(BDR/EDR) (Conducted Measurement) Product Name: NucBox5 Trade Mark: GMKtec Test Model: KB5 FCC ID: 2AXUD-KB5 Environmental Conditions Temperature: 25.5C Relative Humidity: 55% ATM Pressure: 100.0 kPa Test Engineer: Anna Hu Supervised by: Hugo Chen NOTE N/A Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Channel 20db EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.936 2401.553 2402.489 --- PASS 2441 0.945 2440.553 2441.498 --- PASS 2480 0.939 2479.553 2480.492 --- PASS 2DH5 Ant1 2402 1.311 2401.355 2402.666 --- PASS 2441 1.308 2440.358 2441.666 --- PASS 2480 1.311 2479.358 2480.669 --- PASS 3DH5 Ant1 2402 1.296 2401.361 2402.657 --- PASS 2441 1.302 2440.358 2441.660 --- PASS 2480 1.275 2479.364 2480.639 --- PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 2 of 35 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 3 of 35 2DH5_Ant1_2402 2DH5_Ant1_2441 2DH5_Ant1_2480 3DH5_Ant1_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 4 of 35 3DH5_Ant1_2441 3DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 5 of 35 Appendix B: Maximum conducted output power Test Result TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict DH5 Ant1 2402 -0.67 ≤30.00 PASS 2441 -1.17 ≤30.00 PASS 2480 -2.67 ≤30.00 PASS 2DH5 Ant1 2402 0.37 ≤20.97 PASS 2441 -0.01 ≤20.97 PASS 2480 -1.61 ≤20.97 PASS 3DH5 Ant1 2402 0.72 ≤20.97 PASS 2441 0.22 ≤20.97 PASS 2480 -1.06 ≤20.97 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 6 of 35 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 7 of 35 2DH5_Ant1_2402 2DH5_Ant1_2441 2DH5_Ant1_2480 3DH5_Ant1_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 8 of 35 3DH5_Ant1_2441 3DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 9 of 35 Appendix C: Carrier frequency separation Test Result TestMode Antenna Channel Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 0.982 ≥0.945 PASS 2DH5 Ant1 Hop 0.992 ≥0.874 PASS 3DH5 Ant1 Hop 1.014 ≥0.868 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 10 of 35 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 11 of 35 Appendix D: Time of occupancy Test Result TestMode Antenna Channel BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH5 Ant1 Hop 2.89 100 0.289 ≤0.4 PASS 2DH5 Ant1 Hop 2.89 60 0.173 ≤0.4 PASS 3DH5 Ant1 Hop 2.89 60 0.174 ≤0.4 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 12 of 35 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 13 of 35 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 14 of 35 Appendix E: Number of hopping channels Test Result TestMode Antenna Channel Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 3DH5 Ant1 Hop 79 ≥15 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 15 of 35 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 16 of 35 Appendix F: Band edge measurements Test Result TestMode Antenna ChName Channel RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -1.08 -50.25 ≤-21.08 PASS High 2480 -3.14 -49.2 ≤-23.14 PASS Low Hop_2402 -2.29 -50.45 ≤-22.29 PASS High Hop_2480 -3.45 -48.6 ≤-23.45 PASS 2DH5 Ant1 Low 2402 -1.10 -49.79 ≤-21.1 PASS High 2480 -3.28 -48.75 ≤-23.28 PASS Low Hop_2402 -5.08 -49.73 ≤-25.08 PASS High Hop_2480 -3.56 -48.2 ≤-23.56 PASS 3DH5 Ant1 Low 2402 -1.37 -49.82 ≤-21.37 PASS High 2480 -4.07 -48.59 ≤-24.07 PASS Low Hop_2402 -4.07 -49.89 ≤-24.07 PASS High Hop_2480 -4.92 -48.8 ≤-24.92 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 17 of 35 Test Graphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 18 of 35 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 19 of 35 2DH5_Ant1_High_Hop_2480 3DH5_Ant1_Low_2402 3DH5_Ant1_High_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 20 of 35 3DH5_Ant1_Low_Hop_2402 3DH5_Ant1_High_Hop_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 Report No.: TZ220102886-E3 Page 21 of 35 Appendix G: Conducted Spurious Emission Test Result TestMode Antenna Channel FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 Reference -1.89 -1.89 --- PASS 30~1000 -1.89 -61.33 ≤-21.89 PASS 1000~26500 -1.89 -51.45 ≤-21.89 PASS 2441 Reference -2.23 -2.23 --- PASS 30~1000 -2.23 -60.32 ≤-22.23 PASS 1000~26500 -2.23 -50.86 ≤-22.23 PASS 2480 Reference -3.51 -3.51 --- PASS 30~1000 -3.51 -61 ≤-23.51 PASS 1000~26500 -3.51 -51.42 ≤-23.51 PASS 2DH5 Ant1 2402 Reference -1.66 -1.66 --- PASS 30~1000 -1.66 -61.27 ≤-21.66 PASS 1000~26500 -1.66 -49.23 ≤-21.66 PASS 2441 Reference -5.14 -5.14 --- PASS 30~1000 -5.14 -60.6 ≤-25.14 PASS 1000~26500 -5.14 -49.62 ≤-25.14 PASS 2480 Reference -4.48 -4.48 --- PASS 30~1000 -4.48 -61.3 ≤-24.48 PASS 1000~26500 -4.48 -51.04 ≤-24.48 PASS 3DH5 Ant1 2402 Reference -1.77 -1.77 --- PASS 30~1000 -1.77 -60.03 ≤-21.77 PASS 1000~26500 -1.77 -49.72 ≤-21.77 PASS 2441 Reference -1.68 -1.68 --- PASS 30~1000 -1.68 -60.55 ≤-21.68 PASS 1000~26500 -1.68…

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Report No.: TZ220102886-E3 Page 1 of 37 FCC TEST REPORT Test report On Behalf of Shenzhen GMK Technology Co., Ltd For NucBox5 Model No.:KB5 FCC ID: 2AXUD-KB5 Prepared for : Shenzhen GMK Technology Co., Ltd 3/F, #5Bldg, HuaLian Industrial Park, XinShi Community, Dalang St, Longhua Dist, 518109, Shenzhen, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: Mar.5 2022~ Mar.16, 2022 Date of Report: Mar.17, 2022 Report Number: TZ220102886-E3 The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ220102886-E3 Page 2 of 37 TEST RESULT CERTIFICATION Applicant’s name ................. : Shenzhen GMK Technology Co., Ltd Address .................................. : 3/F, #5Bldg, HuaLian Industrial Park, XinShi Community, Dalang St, Longhua Dist, 518109, Shenzhen, China Manufacture's Name ............ : Shenzhen GMK Technology Co., Ltd Address .................................. : 3/F, #5Bldg, HuaLian Industrial Park, XinShi Community, Dalang St, Longhua Dist, 518109, Shenzhen, China Product description Trade Mark: GMKtec Product name ........................... : NucBox5 Model and/or type reference : KB5 Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test : Date (s) of performance of tests : Mar.5 2022~ Mar.16, 2022 Date of Issue : Mar.17, 2022 Test Result : Pass Testing Engineer : (Anna Hu) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ220102886-E3 Page 3 of 37 Revision History Revision Issue Date Revisions Revised By 00 Mar.17, 2022 Initial Issue Andy Zhang Report No.: TZ220102886-E3 Page 4 of 37 TABLE OF CONTENTS Description Page 1. GENERAL INFORMATION ................................................................................................................ 5 1.4 Description of Test Facility .......................................................................................................................... 6 1.5 Statement of the Measurement Uncertainty ............................................................................................. 7 1.6 Measurement Uncertainty ........................................................................................................................... 7 1.7 Description of Test Modes .......................................................................................................................... 7 2. TEST METHODOLOGY ...................................................................................................................... 8 2.1 EUT Configuration ........................................................................................................................................ 8 2.2 EUT Exercise ................................................................................................................................................ 8 2.3 General Test Procedures ............................................................................................................................ 8 3. SYSTEM TEST CONFIGURATION .................................................................................................. 9 3.1 Justification .................................................................................................................................................... 9 3.2 EUT Exercise Software ............................................................................................................................... 9 3.3 Special Accessories ..................................................................................................................................... 9 3.4 Block Diagram/Schematics ......................................................................................................................... 9 3.5 Equipment Modifications ............................................................................................................................. 9 3.6 Test Setup ..................................................................................................................................................... 9 4. SUMMARY OF TEST RESULTS .................................................................................................... 10 5. SUMMARY OF TEST EQUIPMENT ............................................................................................... 11 6. MEASUREMENT RESULTS ............................................................................................................ 12 6.1 Peak Power ................................................................................................................................................. 12 6.2 Frequency Separation and 20 dB Bandwidth ........................................................................................ 13 6.3 Number of Hopping Frequency ................................................................................................................ 14 6.4 Time of Occupancy (Dwell Time) ............................................................................................................. 15 6.5 Conducted Spurious Emissions and Band Edges Test ........................................................................ 17 6.6 Restricted Band Emission Limit .........................................…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 TEST SETUP PHOTOS OF THE EUT Conducted Emission Radiated Emission Below 1GHz Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AXUD-KB5 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Radiated Emission Above 1GHz