2AHRDEP-AC1686Wireless Adapter

FCC Statement 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. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. SAR tests are conducted using standard operating positions accepted by the FCC with the device transmitting at its highest certified power level in all tested frequency bands, although the SAR is determined at the highest certified power level, the actual SAR level of the device while operating can be well below the maximum value, in general, the closer you are to a wireless base station antenna, the lower the power output. Before a new model device is a available for sale to the public, it must be tested and certified to the FCC that it does not exceed the exposure limit established by the FCC, Tests for each device are performed in positions and locations ( worn on the body)as required by the FCC. For body worn operation, this model device has been tested and meets the FCC RF exposure guidelines when used with an accessory designated for this product or when used with an accessory that contains no metal and that positions the device a minimum of 5 mm from the body. Noncompliance with the above restrictions may result in violation of RF exposure guidelines.

Shenzhen EDUP Electronics Technology Co.,Ltd. ADD: 6 Floor, #6 Building, No.48, Kangzheng Road Liantang Industrial Area, Buji Town, Shenzhen, China Tel.: 0755-83648350 FAX: 0755-83582587 E-mail: [email protected] DECLARATION OF SIMILARITY Date: 2021-05-28 FEDERAL COMMUNICATIONS COMMISSION Authorization and Ev aluation Division 7435 Oakland Mills Road Co lumbia, MD 21046 Dear Sir or Madam: We, Shenzhen EDUP Electronics Technology Co.,Ltd., hereby declare that product: Wireless Adapter, FCC ID: 2AHRDEP-AC1686, model numbers: EP -AC1687, EP-AC1686GS, EP-AC1686S, EP-AC1687S, EP-AC1687GS are electrically identical with the model number EP-AC1686 which was tested by BACL. They have the same electromagnetic emissions and electromagnetic compatibility ch aracteristics. A descrip tion of the difference among those models and those that are declared similar are as follows: Due to marketing, they are th e same product, and just have the different model name, the rest are the same. Please contact me should there be need for any additional clarification or information. Best Regards, Printed Name: Zhou Chunping Title: Manager

FCC Confidential Authorization In accordance with Sections 0.457 and 0.459 of the Commission's Rules, Shenzhen EDUP Electronics Technolog y Co.,Ltd. hereb y requests long-term confidential treatment of information accompan y ing this application as outlined below: • Block Diagram • Schematics • Operation Description •S OFTWARE SECURITY DECLARATION The above materials contain proprietar y and confidential information not customaril y released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerel y , Signature: Printed Name: Titl e : Manager QA-FR-171-A Date: 2021-05-28 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for ce1tification of FCC ID: 2AHRDEP-AC1686 Shenzhen EDUP Electronics Technolog y Co.,Ltd. Add: 6 Floor, #6 Building, No.48, Kangzheng Road Liantang Industrial Area, Buji Town Shenzhen, China Tel: 0755-83648350 Fax: 0755-83582587 E mail: [email protected] Zhou Chunping

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Antenna

FCC ID: 2AHRDEP-AC1686

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS ANT 0 ANT 1 Antenna

Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. (Dongguan). This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA* or any agency of the Federal Government. * This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*”. SAR EVALUATION REPORT For Shenzhen EDUP Electronics Technology Co.,Ltd. 6 Floor, #6 Building, No.48, Kangzheng Road Liantang Industrial Area, Buji Town Shenzhen, China FCC ID: 2AHRDEP-AC1686 Report Type: Original Report Product Type: Wireless Adapter Report Number: RDG210330010-20 Report Date: 2021-05-30 Reviewed By: Brave Lu SAR Engineer Prepared By: Bay Area Compliance Laboratories Corp. (Dongguan) No.12, Pulong East 1 st Road, Tangxia Town, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG210330010-20 SAR Evaluation Report 2 of 38 Attestation of Test Results EUT Information EUT Description Wireless Adapter Tested Model EP-AC1686 Multiple Models EP-AC1687, EP-AC1686GS, EP-AC1686S, EP-AC1687S EP-AC1687GS FCC ID 2AHRDEP-AC1686 Serial Number RDG210330010-SA-S1 Test Date 2021-04-25 MODE Max. SAR Level(s) Reported(W/kg) Limit (W/kg) WLAN 2.4G 1g Body SAR 0.51 1. 6 WLAN 5.8G 1g Body SAR 0.71 Simultaneous 1g Body SAR 1.19 Applicable Standards FCC 47 CFR part 2.1093 Radiofrequency radiation exposure evaluation: portable devices RF Exposure Procedures: TCB Workshop April 2019 IEEE1528:2013 IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques IEC 62209-1:2016 Measurement procedure for the assessment of specific absorption rate of human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices – Part 1: Devices used next to the ear (Frequency range of 300 MHz to 6 GHz) KDB procedures KDB 447498 D01 General RF Exposure Guidance v06 KDB 865664 D01 SAR Measurement 100 MHz to 6 GHz v01r04 KDB 865664 D02 RF Exposure Reporting v01r02 KDB 447498 D02 SAR Procedures for Dongle Xmtr v02r01 Note: This wireless device has been shown to be capable of compliance for localized specific absorption rate (SAR) for General Population/Uncontrolled Exposure limits specified in FCC 47 CFR part 2.1093 and has been tested in accordance with the measurement procedures specified in IEEE 1528-2013 and RF exposure KDB procedures. The results and statements contained in this report pertain only to the device(s) evaluated. Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG210330010-20 SAR Evaluation Report 3 of 38 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ............................................................................................................................ 4 EUT DESCRIPTION ........................................................................................................................................................ 5 TECHNICAL SPECIFICATION............................................................................................................................................. 5 REFERENCE, STANDARDS, AND GUIDELINES .................................................................................................... 6 SAR LIMITS ..................................................................................................................................................................... 7 FACILITIES ...................................................................................................................................................................... 8 DESCRIPTION OF TEST SYSTEM ............................................................................................................................. 9 EQUIPMENT LIST AND CALIBRATION ................................................................................................................ 15 EQUIPMENTS LIST & CALIBRATION INFORMATION ...................................................................................................... 15 SAR MEASUREMENT SYSTEM VERIFICATION ................................................................................................ 16 LIQUID VERIFICATION ................................................................................................................................................... 16 SYSTEM ACCURACY VERIFICATION .............................................................................................................................. 17 SAR SYSTEM VALIDATION DATA ........................................................................................................................ 18 EUT TEST STRATEGY AND METHODOLOGY .................................................................................................... 20 TEST POSITIONS FOR DEVICE OPERATING NEXT TO A PERSON’S EAR ......................................................................... 20 CHEEK/TOUCH POSITION .............................................................................................................................................. 21 EAR/TILT POSITION ....................................................................................................................................................... 21 TEST POSITIONS FOR BODY-WORN AND OTHER CONFIGURATIONS ................................................................................ 22 TEST DISTANCE FOR SAR EVALUATION ....................................................................................................................... 22 SAR EVALUATION PROCEDURE ..................................................................................................…

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APPENDIX C PROBE CALIBRATION CERTIFICATES DIPOLE CALIBRATION CERTIFICATES

Report No.: RDG210330010-20 Page 1 of 19 Plot 1#: 2.4G WLAN Mode B_ Chain 0_Horizontal-Down_Mid DUT: Wireless Adapter; Type: EP-AC1686; Serial: RDG210330010-SA-S1 Communication System: 802.11 b; Frequency: 2437 MHz;Duty Cycle: 1:1 Medium parameters used: f = 2437 MHz; σ = 1.781 S/m; ε r = 39.251; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration:  Probe: EX3DV4 - SN7329; ConvF(7.44, 7.44, 7.44) @ 2437 MHz; Calibrated: 2020/11/30  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1354; Calibrated: 2020/9/30  Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412  Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (51x191x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 0.660 W/kg Zoom Scan (5x5x4)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 17.95 V/m; Power Drift = -0.13 dB Peak SAR (extrapolated) = 0.697 W/kg SAR(1 g) = 0.349 W/kg; SAR(10 g) = 0.171 W/kg Maximum value of SAR (measured) = 0.560 W/kg 0 dB = 0.560 W/kg = -2.52 dBW/kg Report No.: RDG210330010-20 Page 2 of 19 Plot 2#: 2.4G WLAN Mode B_ Chain 0_ Horizontal-Up_Mid DUT: Wireless Adapter; Type: EP-AC1686; Serial: RDG210330010-SA-S1 Communication System: 802.11 b; Frequency: 2437 MHz;Duty Cycle: 1:1 Medium parameters used: f = 2437 MHz; σ = 1.781 S/m; ε r = 39.251; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration:  Probe: EX3DV4 - SN7329; ConvF(7.44, 7.44, 7.44) @ 2437 MHz; Calibrated: 2020/11/30  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1354; Calibrated: 2020/9/30  Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412  Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (51x201x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 0.444 W/kg Zoom Scan (5x5x4)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 7.512 V/m; Power Drift = -0.10 dB Peak SAR (extrapolated) = 0.530 W/kg SAR(1 g) = 0.269 W/kg; SAR(10 g) = 0.135 W/kg Maximum value of SAR (measured) = 0.428 W/kg 0 dB = 0.428 W/kg = -3.69 dBW/kg Report No.: RDG210330010-20 Page 3 of 19 Plot 3#: 2.4G WLAN Mode B_ Chain 0_ Vertical-Front_Mid DUT: Wireless Adapter; Type: EP-AC1686; Serial: RDG210330010-SA-S1 Communication System: 802.11 b; Frequency: 2437 MHz;Duty Cycle: 1:1 Medium parameters used: f = 2437 MHz; σ = 1.781 S/m; ε r = 39.251; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration:  Probe: EX3DV4 - SN7329; ConvF(7.44, 7.44, 7.44) @ 2437 MHz; Calibrated: 2020/11/30  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1354; Calibrated: 2020/9/30  Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412  Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (51x201x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 0.291 W/kg Zoom Scan (5x5x4)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 3.653 V/m; Power Drift = 0.19 dB Peak SAR (extrapolated) = 0.340 W/kg SAR(1 g) = 0.182 W/kg; SAR(10 g) = 0.097 W/kg Maximum value of SAR (measured) = 0.280 W/kg 0 dB = 0.280 W/kg = -5.53 dBW/kg Report No.: RDG210330010-20 Page 4 of 19 Plot 4#: 2.4G WLAN Mode B_ Chain 0_ Vertical-Back_Mid DUT: Wireless Adapter; Type: EP-AC1686; Serial: RDG210330010-SA-S1 Communication System: 802.11 b; Frequency: 2437 MHz;Duty Cycle: 1:1 Medium parameters used: f = 2437 MHz; σ = 1.781 S/m; ε r = 39.251; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration:  Probe: EX3DV4 - SN7329; ConvF(7.44, 7.44, 7.44) @ 2437 MHz; Calibrated: 2020/11/30  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1354; Calibrated: 2020/9/30  Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412  Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (51x201x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 0.295 W/kg Zoom Scan (5x5x4)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 4.538 V/m; Power Drift = 0.05 dB Peak SAR (extrapolated) = 0.357 W/kg SAR(1 g) = 0.185 W/kg; SAR(10 g) = 0.098 W/kg Maximum value of SAR (measured) = 0.292 W/kg 0 dB = 0.292 W/kg = -5.35 dBW/kg Report No.: RDG210330010-20 Page 5 of 19 Plot 5#: 2.4G WLAN Mode B_ Chain 1_Horizontal-Down_Mid DUT: Wireless Adapter; Type: EP-AC1686; Serial: RDG210330010-SA-S1 Communication System: 802.11 b; Frequency: 2437 MHz;Duty Cycle: 1:1 Medium parameters used: f = 2437 MHz; σ = 1.781 S/m; ε r = 39.251; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration:  Probe: EX3DV4 - SN7329; ConvF(7.44, 7.44, 7.44) @ 2437 MHz; Calibrated: 2020/11/30  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1354; Calibrated: 2020/9/30  Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412  Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (51x201x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 0.513 W/kg Zoom Scan (5x5x4)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 3.541 V/m; Power Drift = -0.15 dB Peak SAR (extrapolated) = 0.729 W/kg SAR(1 g) = 0.497 W/kg; SAR(10 g) = 0.213 W/kg Maximum value of SAR (measured) = 0.576 W/kg 0 dB = 0.576 W/kg = -2.40 dBW/kg Report No.: RDG210330010-20 Page 6 of 19 Plot 6#: 2.4G WLAN Mode B_ Chain 1_ Horizontal-Down Flod_Mid DUT: Wireless Adapter; Type: EP-AC1686; Serial: RDG210330010-SA-S1 Communication System: 802.11 b; Frequency: 2437 MHz;Duty Cycle: 1:1 Medium parameters used: f = 2437 MHz; σ = 1.781 S/m; ε r = 39.251; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration:  Probe: EX3DV4 - SN7329; ConvF(7.44, 7.44, 7.44) @ 2437 MHz; Calibrated: 2020/11/30  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1354; Calibrated: 2020/9/30  Phantom: Twin SA…

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Report No.: RDG210330010-20 Page 1 of 4 APPENDIX B EUT TEST POSITION PHOTOS Liquid depth ≥ 15cm Phantom Type: SAM 1; Type: QD000P40CC; Serial: TP:1412 Report No.: RDG210330010-20 Page 2 of 4 Horizontal-Down Setup Photo (5mm) Horizontal-Down With Antenna Fold Setup Photo (5mm) 5mm 5mm Report No.: RDG210330010-20 Page 3 of 4 Horizontal-Up Adding USB extension cable Setup Photo (5mm) Vertical-Front Adding USB extension cable Setup Photo (5mm) 5mm 5mm Report No.: RDG210330010-20 Page 4 of 4 Vertical-Back Setup Photo (5mm) 5mm

FCC PART 15.247 TEST REPORT For Shenzhen EDUP Electronics Technology Co.,Ltd. 6 Floor, #6 Building, No.48, Kangzheng Road Liantang Industrial Area, Buji Town, Shenzhen, china Report Type: Original Report Product Name: Wireless Adapter Report Number: RDG210330010-00A Re port Date: 2021-05-19 Reviewed By: Ivan Cao Assistant Manager Test Laboratory: Bay Area Compliance Laboratories Corp. (Dongguan) No.12, Pulong East 1 st Road, Tangxia Town, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn FCC ID: 2AHRDEP-AC1686 Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG210330010-00A Page 2 of 63 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 DECLARATIONS ............................................................................................................................................................ 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 9 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 9 SUPPORT CABLE LIST AND DETAILS ............................................................................................................................ 9 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 9 SUMMARY OF TEST RESULTS ............................................................................................................................. 10 FCC §15.247 (i) & §1.1310 & §2.1093- RF Exposure ............................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 FCC §15.203 - ANTENNA REQUIREMENT ........................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 12 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 EUT SETUP ................................................................................................................................................................ 13 EMI TEST RECEIVER SETUP ....................................................................................................................................... 13 TEST PROCEDURE ...................................................................................................................................................... 14 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 14 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 14 TEST DATA ................................................................................................................................................................ 15 FCC §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS ............................................................................. 17 APPLICABLE STANDARD ............................................................................................................................................ 17 EUT SETUP ................................................................................................................................................................ 17 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 18 TEST PROCEDURE ...................................................................................................................................................... 18 CORRECTED AMPLITUDE & MARGIN CALCULATION ..........................................................…

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EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions Front View Conducted Emissions Side View Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View