VVXLM842LM842 WiFi and Bluetooth 5.0 Dual Mode Combination USB Adapter

Overview Part No Revised Product 05AUG/2019 Datasheet Version1.2 See Last Page LM842 The LM842 USB Adapter (Dongle) complies with Bluetooth® 5.0 (Dual Mode) and IEEE 802.11ac WiFi Standards of operation. Using a fully integrated single-chip that supports 2-stream 802.11ac solutions with Multi-user MIMO (Multiple-Input, Multiple-Output) Supplied in two option form factors With 2 x Onboard Metal Frame Antennas, Compliant to; IEEE 802.11ac, abgn additional standards, Compliant to; Bluetooth® 5.02 and backward compatible with Bluetooth v2.1+EDR / v3.0 / v3.0+HS / v4.0, 4.1, & 4.2 with both BR/EDR. Classic and LE can operate simultaneously. The Realtek IC, RTL8822CU using a USB main interface. LM842 oers high throughput for both WiFi and Bluetooth® connections, connected via a (HCI) USB 2.0 TYPE A interface. LM842 WiFi 802.11ac / Bluetooth® 5.0 2T2R USB Combi Adapter USB 2.0 Interface Certification The LM842 is to be certified for United States of America, under FCC and Europe under CE standards. Further countries by request depending on volumes. Our company has a wealth of experience and has certified products all over the world, with access to a global network of local representatives, enabling fast certification processing when requested. Please enquire with us for further details. LM842 Page 1 of 7 +44(0) 207 428 2647 | [email protected] 78 10 Features WiFi 802.11ac, abgn Wave-2 compatible with MU-MIMO Bluetooth® v5.0 Dual Mode (Backwards compatible from Bluetooth® v4.2) WPA, WPA-PSK, WPA2, WPA2 -PSK and WEP (64bit & 128bit) encryption schemes 2.4 GHz and 5GHz ISM Frequency bands 2T2R 802.11n 2.4GHz WiFi 300Mbps data rate [Untested] 2T2R 802.11ac 5GHz WiFi 867Mbps data rate [Untested] 2T2R BT5.0 2.4GHz 1.3Mbps data rate [Tested] WiFi/Bluetooth® coexistence enabled USB 2.0 with multi interface controller 35-39mm x 18mm x 10mm Bluetooth® SIG, FCC & CE certifications prior to release. RoHS, REACH and WEEE Part No Product See Last Page LM842 LM842 WiFi 802.11ac / Bluetooth® 5.0 2T2R USB Combi Adapter USB 2.0 Interface LM842 Page 2 of 7 +44(0) 207 428 2647 | [email protected] General Specification Hardware Chipset Antenna Interfaces Realtek Onboard Chip Antenna USB 2.0 (Full Speed) RF Characteristics Tx Output Power Rx Sensitivity WiFi; 17dBm – 802.11b@CCK 11Mbps 15dBm – 802.11g@OFDM 54Mbps 13dBm – 802.11n@MCS7_HT20 13dBm – 802.11n@MCS7_HT40 13dBm – 802.11a@OFDM 54Mbps 9Bm – 802.11ac@NSS1 MCS9_VHT80 Bluetooth®: Maximum 7.5dBm WiFi; -80dBm – 802.11b@11Mbps -71dBm – 802.11g@54MBps -67dBm – 802.11n@MCS7_BW20 -64dBm - 802.11n@MCS7_BW40 -57dBm – 802.11ac@NSS1_MCS9_BW20 Bluetooth®: -89dBm@1Mbps -90dBm@2Mbps -83dBm@3Mbps Wireless Wireless Standard Adapter Type OS Compatibility Security Network Architecture WiFi: 802.11ac, abgndehi Bluetooth®: v2.1+EDR/v3.0/v3.0+HS/v4.2 Host Controller Interface (HCI) Linux and Windows 7 - 10 WiFi; WPA, WPA-PSK, WPA2, WPA2 -PSK and WEP (64bit & 128bit) Bluetooth®; Simple Paring WiFi; Ad hoc mode (Peer-to-Peer) and Infrastructure mode Software AP; WiFi Direct Bluetooth®; Pico Net; Scatter Net Part No Product See Last Page LM842 LM842 WiFi 802.11ac / Bluetooth® 5.0 2T2R USB Combi Adapter USB 2.0 Interface LM842 Page 3 of 7 +44(0) 207 428 2647 | [email protected] -20°C to +85°C ambient temperature 5 to 90 % (non-condensing) -40°C to +90°C ambient temperature 5 to 90 % (non-condensing) 5v 22.3mm x 15mm x 8mm TBA See our website or enquire for this products certifications. R oHS, REACH and WEEE 2 Year Manufacturer RTB Physical Characteristics Operating Temperature Storage Temperature USB Input Voltage Dimensions (L x W x H) Weight Certifications Compliance Warranty General Specification (Continued) RF Characteristics R ange (in open space) Data Transfer Rate Frequency Modulation Scheme Spread Spectrum Operating Channel WiFi: 220m Bluetooth®: Class 1 WiFi: 802.11n mode up to 110Mbps 802.11ac mode up to 255Mbps Bluetooth®: Basic Rate 1.1 & 1.3Mbps 2.4GHz (2.4GHz - 2.4835GHz) and 5GHz (5.15GHz - 5.825GHz) WiFi: 802.11b: CCK, DQPSK, DBPSK 802.11g/n: 64QAM, 16QAM, QPSK, BPSK 802.11ac: 256QAM, 64QAM, 16QAM, QPSK, BPSK Bluetooth®: 8DPSK, π/4 DQPSK, GFSKFSK WiFi: IEEE 802.11b: DSSS (Direct Sequence Spread Spectrum) IEEE 802.11ac/a/g/n: OFDM (Orthogonal Frequency Division Multiplexing) Bluetooth®: FHSS (Frequency Hopping Spread Spectrum) WiFi (2.4GHz): 11: (Ch. 1-11) – United States 13: (Ch. 1-13) – Europe 14: (Ch. 1-14) – Japan Bluetooth® (2.4GHz): Ch. 0 to 78 Part No Product See Last Page LM842 LM842 WiFi 802.11ac / Bluetooth® 5.0 2T2R USB Combi Adapter USB 2.0 Interface LM842 +44(0) 207 428 2647 | [email protected] Page 4 of 7 Physical Dimensions (Version with 2 x Onboard Metal Frame Antennas) Part No Product See Last Page LM842 LM842 WiFi 802.11ac / Bluetooth® 5.0 2T2R USB Combi Adapter USB 2.0 Interface LM842 +44(0) 207 428 2647 | [email protected] Page 5 of 7 4.50 ± 0.10 12.00 *9.40±0.20 *17.00 ± 0.20 20.30 *31.80±0.50 15.30 7.50 XCVR Block Diagram (Version with 2 x Onboard Metal Frame Antennas) Part No ProductLM842 LM842 WiFi 802.11ac / Bluetooth® 5.0 2T2R USB Combi Adapter USB 2.0 Interface LM842 +44(0) 207 428 2647 | [email protected] Page 6 of 7 Datasheet Version Notes Added version notes to datasheet.v1.020 JUN 2019 Text amendment on Block Diagram.v1.119 JUL 2019 Extended Temperature Range Housing Insulation coupled with a PCB and BOM that use components rated at -40c, other than the Realtek IC that is a 0c rated component. Our products undergo an intensive test regime which if the product sucessfully passes we then approve it for use at -20c and provide a warranty for the product for two years. Our temperature test report is available upon request. See Last Page Tx / Rx DPX WiFi Tx / Rx DPX WiFi / BT Metal Frame Antenna Metal Frame Antenna OTP 3.3V5V D+ D- 8822CU 2.4GHz & 5GHz XTAL 40MHz HOST INTERFACE USB 2.0 CONNECTOR LDO Part No Product See Below LM842 LM842 WiFi 802.11ac / Bluetooth® 5.0 2T2R USB Combi Adapter USB 2.0…

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Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 EUT View 3 EUT View 4 Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 EUT View 5 EUT View 6

Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format FCC ID: VVXLM842 Specifications: Text is Black in color and justified. Labels are printed in indelible ink on permanent adhesive silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Proposed Label Location on EUT FCC ID Label Location

Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 EUT View 3 EUT View 4 Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 Antenna View Wi-Fi Antenna Wi-Fi/BT Antenna

Model: LM842 Report No.: WTX19X12087485W-6 Page 1 of 62 SAR Report FCC ID: VVXLM842 Test Standards: FCC Part 2.1093, ANSI / IEEE C95.1 :2005+A1:2010 ANSI / IEEE C95.3 :2002(R2008) Product Description: LM842 WiFi and Bluetooth 5.0 Dual Mode Combination USB Adapter Tested Model: LM842 Report No.: WTX19X12087485W-6 Sample Received Date: 2019-12-20 Tested Date: 2020-01-13 to 2020-01-17 Issued Date: 2020-01-17 Tested By: Jack Sun / Engineer Reviewed By: Lion Cai / RF Manager Approved & Authorized By: Silin Chen / Manager Prepared By: Shenzhen SEM Test Technology Co., Ltd. 1/F, Building A, Hongwei Industrial Park, Liuxian 2nd Road, Bao'an District, Shenzhen, P.R.C.（518101） Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen SEM. Test Technology Co., Ltd. FCC SAR Measurement and Test Report For LM Technologies Ltd. Unit 19, Spectrum House, 32-34, Gordon House Road, London, NW5 1LP, United Kingdom Model: LM842 Report No.: WTX19X12087485W-6 Page 2 of 62 SAR Report TABLE OF CONTENTS 1. General Information ................................................................................................................................................... 3 1.1 Product Description for Equipment Under Test (EUT) ......................................................................................... 3 1.2 Test Standards .................................................................................................................................................... 5 1.3 Test Methodology ................................................................................................................................................ 5 1.4 Test Facility ......................................................................................................................................................... 5 2. Summary of Test Results .......................................................................................................................................... 6 3. Specific Absorption Rate (SAR) ................................................................................................................................ 7 3.1 Introduction .......................................................................................................................................................... 7 3.2 SAR Definition ..................................................................................................................................................... 7 4. SAR Measurement System ........................................................................................................................................ 8 4.1 The Measurement System .................................................................................................................................. 8 4.2 Probe ................................................................................................................................................................... 8 4.3 Probe Calibration Process ................................................................................................................................. 10 4.4 Phantom ............................................................................................................................................................ 11 4.5 Device Holder .................................................................................................................................................... 11 4.6 Test Equipment List ........................................................................................................................................... 12 5. Tissue Simulating Liquids ....................................................................................................................................... 13 5.1 Composition of Tissue Simulating Liquid ........................................................................................................... 13 5.2 Tissue Dielectric Parameters for Head and Body Phantoms ............................................................................. 14 5.3 Tissue Calibration Result ................................................................................................................................... 15 6. SAR Measurement Evaluation ................................................................................................................................ 16 6.1 Purpose of System Performance Check ............................................................................................................ 16 6.2 System Setup .................................................................................................................................................... 16 6.3 Validation Results .............................................................................................................................................. 17 7. EUT Testing Position ............................................................................................................................................... 18 7.1 EUT Antenna Position ....................................................................................................................................... 18 7.2 EUT Testing Position ......................................................................................................................................... 19 8. SAR Measurement Procedures ............................................................................................................................... 20 8.1 Measurement Procedures ................................................................................................................................. 20 8.2 Spatial Peak SAR Evaluation .....................…

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Model: LM842 Report No.: WTX19X12087485W-3 Page 1 of 51 FCC Part 15.247 FCC Part 15C Measurement and Test Report For LM Technologies Ltd. Unit 19, Spectrum House, 32-34, Gordon House Road, London, NW5 1LP, United Kingdom FCC ID: VVXLM842 FCC Rule(s): FCC Part 15.247 Product Description: LM842 WiFi and Bluetooth 5.0 Dual Mode Combination USB Adapter Tested Model: LM842 Report No.: WTX19X12087485W-3 Sample Receipt Date: Dec.17, 2019 Tested Date: Dec.18, 2019 to Jan.19, 2020 Issued Date: Jan.19, 2020 Tested By: Mike Shi / Engineer Reviewed By: Lion Cai / RF Manager Approved & Authorized By: Silin Chen / Manager Prepared By: Shenzhen SEM Test Technology Co., Ltd. 1/F, Building A, Hongwei Industrial Park, Liuxian 2nd Road, Bao'an District, Shenzhen, P.R.C.（518101） Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen SEM Test Technology Co., Ltd. Model: LM842 Report No.: WTX19X12087485W-3 Page 2 of 51 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ............................................................................... 4 1.2 TEST STANDARDS ................................................................................................................................................... 5 1.3 TEST METHODOLOGY ............................................................................................................................................. 5 1.4 TEST FACILITY ....................................................................................................................................................... 5 1.5 EUT SETUP AND TEST MODE ................................................................................................................................. 6 1.6 MEASUREMENT UNCERTAINTY .............................................................................................................................. 7 1.7 TEST EQUIPMENT LIST AND DETAILS ..................................................................................................................... 8 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 10 3. RF EXPOSURE ....................................................................................................................................................... 11 3.1 STANDARD APPLICABLE ....................................................................................................................................... 11 3.2 TEST RESULT........................................................................................................................................................ 11 4. ANTENNA REQUIREMENT ................................................................................................................................ 12 4.1 STANDARD APPLICABLE ....................................................................................................................................... 12 4.2 EVALUATION INFORMATION ................................................................................................................................ 12 5. FREQUENCY HOPPING SYSTEM REQUIREMENTS ................................................................................... 13 5.1 STANDARD APPLICABLE ....................................................................................................................................... 13 5.2 FREQUENCY HOPPING SYSTEM............................................................................................................................. 13 5.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .................................................................................... 14 6. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION ................................................... 15 6.1 STANDARD APPLICABLE ....................................................................................................................................... 15 6.2 TEST PROCEDURE ................................................................................................................................................. 15 6.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 15 7. DWELL TIME OF HOPPING CHANNEL .......................................................................................................... 19 7.1 STANDARD APPLICABLE ....................................................................................................................................... 19 7.2 TEST PROCEDURE ................................................................................................................................................. 19 7.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 20 8. 20DB BANDWIDTH ............................................................................................................................................... 27 8.1 STANDARD APPLICABLE ....................................................................................................................................... 27 8.2 TEST PROCEDURE ................................................................................................................................................. 27 8.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 28 9. RF OUTPUT POWER ...…

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Ref : ACR.154.4.15.SATU.A SHENZHEN SEM TEST TECHNOLOGY CO., LTD. 1/F, BUILDING A, HONGWEI INDUSTRIAL PARK, LIUXIAN 2ND ROAD BAO'AN DISTRICT SHENZHEN (518101), CHINA MVG COMOSAR DOSIMETRIC E-FIELD PROBE SERIAL NO.: SN 09/13 EP168 Calibrated at MVG US 2105 Barrett Park Dr. - Kennesaw, GA 30144 05/22/2019 Summary: This document presents the method and results from an accredited COMOSAR Dosimetric E-Field Probe calibration performed in MVG USA using the CALISAR / CALIBAIR test bench, for use with a COMOSAR system only. All calibration results are traceable to national metrology institutions. COMOSAR E-Field Probe Calibration Report COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.154.4.15.SATU.A Page: 2/9 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. Name Function DateSignature Prepared by : Jérôme LUC Product Manager 5/22/2019 Checked by : Jérôme LUC Product Manager 5/22/2019 Approved by : Kim RUTKOWSKI Quality Manager 5/22/2019 Customer Name Distribution : Shenzhen SEM.Test Technology Co., Ltd. Issue Date Modifications A 5/22/2019 Initial release COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.154.4.15.SATU.A Page: 3/9 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. TABLE OF CONTENTS 1 Device Under Test ..................................................................................................... 4 2 Product Description ................................................................................................... 4 2.1 General Information _______________________________________________________ 4 3 Measurement Method ................................................................................................ 4 3.1 Linearity ________________________________________________________________ 4 3.2 Sensitivity _______________________________________________________________ 5 3.3 Lower Detection Limit _____________________________________________________ 5 3.4 Isotropy _________________________________________________________________ 5 3.5 Boundary Effect __________________________________________________________ 5 4 Measurement Uncertainty .......................................................................................... 5 5 Calibration Measurement Results .............................................................................. 6 5.1 Sensitivity in air __________________________________________________________ 6 5.2 Linearity ________________________________________________________________ 7 5.3 Sensitivity in liquid ________________________________________________________ 7 5.4 Isotropy _________________________________________________________________ 8 6 List of Equipment ...................................................................................................... 9 COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.154.4.15.SATU.A Page: 4/9 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. 1DEVICE UNDER TEST Device Under Test Device Type COMOSAR DOSIMETRIC E FIELD PROBE Manufacturer MVG Model SSE5 Serial Number SN 09/13 EP168 Product Condition (new / used) Used Frequency Range of Probe 0.7 GHz-3GHz Resistance of Three Dipoles at Connector Dipole 1: R1=0.224 M: Dipole 2: R2=0.234 M: Dipole 3: R3=0.229 M: A yearly calibration interval is recommended. 2PRODUCT DESCRIPTION 2.1GENERAL INFORMATION MVG¶V&2026$5(ILHOG3UREHVDUHEXLOWLQDFFRUGDQFHWRWKH,(((OET 65 Bulletin C and CEI/IEC 62209 standards. Figure 1±MVG COMOSAR Dosimetric E field Dipole Probe Length 330 mm Length of Individual Dipoles 4.5 mm Maximum external diameter 8 mm Probe Tip External Diameter 5 mm Distance between dipoles / probe extremity 2.7 mm 3MEASUREMENT METHOD The IEEE 1528, OET 65 Bulletin C, CENELEC EN50361 and CEI/IEC 62209 standards provide recommended practices for the probe calibrations, including the performance characteristics of interest and methods by which to assess their affect. All calibrations / measurements performed meet the fore mentioned standards. 3.1LINEARITY The evaluation of the linearity was done in free space using the waveguide, performing a power sweep to cover the SAR range 0.01W/kg to 100W/kg. COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.154.4.15.SATU.A Page: 5/9 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. 3.2SENSITIVITY The sensitivity factors of the three dipoles were determined using a two step calibration method (air and tissue simulating liquid) using waveguides as outlined in the standards. 3.3LOWER DETECTION LIMIT The lower detection limit was assessed using the same measurement set up as used for the linearity measurement. The required lower detection limit is 10 mW/kg. 3.4ISOTROPY The axial isotropy was evaluated by exposing the probe to a reference wave from a standard dipole with the dipole mounted under the flat phantom in the test configuration suggested for system validations and checks. The probe was rotated along its main axis from 0 - 360 degrees in 15 degree steps. The hemispherical isotropy is determined by inserting the probe in a thin plastic box filled with tissue-equivalent liquid, with the plastic box illuminated with the fields f…

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Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Conducted Emission Test Setup Radiation Emission Test Setup (Below 30MHz) Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407 Radiation Emission Test Setup (30MHz to 1GHz) Radiation Emission Test Setup (Above 1GHz) Model: LM842 Report No.: WTX19X12087485W-1/2/3/4 FCC Part 15.247/15.407