2AZDM-CSR8510Bluetooth 4.0 usb dongle

CSR8510 chipset Bluetooth 4.0 dongle Model No.: FX-8510A 1. Description: This mini USB Bluetooth 4.0 Adapter enables short-range wireless data connectivity between computers and Bluetooth enabled devices. Personal digital assistants, cellular phones, and other devices can connect with your computer easily. Bluetooth devices can communicate with each other within a 20M range. Transfer rate is much faster than previous Bluetooth versions! It can backward supports 3.0/2.0 versions. 2. Features:  Dual-mode Bluetooth transfer  Low-power 1.2 to 3.6VI/O  Supporting Bluetooth voice date  Supporting Multi-languages  WLAN coexistence interface  Plug and Play  Bluetooth V4.0 Compliant  Support Profiles: Networking, Dial-up, Fax, LAN access, and Headset.  Operation system: win98,98se,Me,2000,XP,Vista,win7/win8/windows10  Interface: USB compliance  Symbol rate: 3Mbps  Receiving/ Sending range: 20m-50m  Unit size : 22*15*5(mm)  Unit weight:20g 3. Specifications: Bluetooth Specification Standard Bluetooth V4.0 Profiles Bluetooth low energy Dual-mode Bluetooth Frequency Band 2.402Ghz-2.480Ghz Sensitivity [email protected]%BER RF TX Prower +6dBm(ClassП) Power Supply Voltage 5V DC(MAX5.75V) Working Current Depends on profiles, 22mA typical Standby Current (Connected ) 0.4uA Operating Environment Temperature -20°C to +70°C Humidity 10%-90% Non- Condensing Certifications ROHS/CE 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. 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.

Nebra Ltd 1/1 Letter of Authorization Company: Nebra Ltd Address: Unit 4 Bells Yew Green Business Court, Bells Yew Green, East Sussex, United Kingdom Product Name: Bluetooth 4.0 usb dongle Model Number: FX-8510A FCC Identifier: 2AZDM-CSR8510 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Aaron Shaw Date: 2021-05-31 Title: CEO Signature of applicant:

Nebra Ltd 1/1 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2021-05-31 Subject: Request for Confidentiality FCC ID: 2AZDM-CSR8510 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual No ☐ Internal Photos No ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Aaron Shaw Title: CEO

EUT PHOTO(External Photos)

Size:10.5*6.5mm M/N: FX-8510A FCC ID: 2AZDM-CSR8510 Label location

EUT PHOTO(Internal Photos) ※※※※※ END OF REPORT ※※※※※ ANT 1 Photo s RF chipset

Project No.: ZKT-210520L1932E Page 1 of 29 FCC TEST REPORT FCC ID: 2AZDM-CSR8510 Report Number. ................................ : ZKT-210520L1932E Date of Test ................................................. : May. 18, 2021 to May. 27, 2021 Date of issue .................................... : May. 27, 2021 Total number of pages ...................... 29 Test Result ..................................... : PASS Testing Laboratory. ........................... : Shenzhen ZKT Technology Co., Ltd. Address .......................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name ............................ : Nebra Ltd Address .......................................... : Unit 4 Bells Yew Green Business Court, Bells Yew Green, East Sussex, United Kingdom Manufacturer's name ..................... : Shenzhen Eastech Company Limited. Address .......................................... : 2nd floor, 3rd building, Baishixia Development Area, Fuyong Street, Bao'an District, Shenzhen City, Guangdong Province, China. Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.249 ANSI C63.10:2013 Test procedure ................................. : / Non-standard test method ............. : N/A Test Report Form No. .................... : TRF-EL-111_V0 Test Report Form(s) Originator .... : ZKT Testing Master TRF .................................... : Dated: 2020-01-06 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................... : Bluetooth 4.0 usb dongle Trademark ...................................... : N/A Model/Type reference ...................... : FX-8510A Ratings ............................................. : DC 5V from USB Project No.: ZKT-210520L1932E Page 2 of 29 Testing procedure and testing location: Testing Laboratory ................................... : Shenzhen ZKT Technology Co., Ltd. Address ...................................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Alen He Tested by (name + signature) .................... : Joe Liu Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) .................... : Project No.: ZKT-210520L1932E Page 3 of 29 Table of Contents Page 1.VERSION 5 2.1SUMMARY OF TEST RESULTS 6 2.11.1 TEST FACILITY 7 2.21.2 MEASUREMENT UNCERTAINTY 7 3. GENERAL INFORMATION 8 3.1 GENERAL DESCRIPTION OF EUT 8 3.2 1.1DESCRIPTION OF TEST MODES 9 3.3 1.2BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 9 3.4 1.3DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 10 3.51.4 EQUIPMENTS LIST FOR ALL TEST ITEMS 11 4. EMC EMISSION TEST 12 4.1 1.5CONDUCTED EMISSION MEASUREMENT 12 4.1.1 1.5.1POWER LINE CONDUCTED EMISSION LIMITS 12 4.1.2 1.5.2TEST PROCEDURE 12 4.1.3 1.5.3DEVIATION FROM TEST STANDARD 12 4.1.4 1.5.4TEST SETUP 13 4.1.5 1.5.5EUT OPERATING CONDITIONS 13 4.1.6 TEST RESULTS 13 4.2 1.6RADIATED EMISSION MEASUREMENT 14 4.2.1 1.6.1RADIATED EMISSION LIMITS 14 4.2.2 1.6.2TEST PROCEDURE 15 4.2.3 1.6.3DEVIATION FROM TEST STANDARD 15 4.2.4 1.6.4TEST SETUP 15 4.2.5 1.6.5EUT OPERATING CONDITIONS 16 5. BANDWIDTH OF FREQUENCY BAND EDGE 22 5.1 TEST REQUIREMENT: 22 5.2 TEST PROCEDURE 22 5.3 DEVIATION FROM TEST STANDARD 22 5.4 TEST SETUP 22 5.5 EUT OPERATING CONDITIONS 23 5.6 TEST RESULT 24 6. CHANNEL BANDWIDTH 25 7.1 APPLIED PROCEDURES / LIMIT 25 7.2 2.1TEST PROCEDURE 25 7.3 2.2DEVIATION FROM STANDARD 25 7.4 2.3TEST SETUP 25 Project No.: ZKT-210520L1932E Page 4 of 29 Table of Contents Page 7.5 2.4EUT OPERATION CONDITIONS 25 7.6 2.5TEST RESULTS 26 9.ANTENNA REQUIREMENT 28 10. TEST SETUP PHOTO 29 11. EUT CONSTRUCTIONAL DETAILS 29 Project No.: ZKT-210520L1932E Page 5 of 29 1.VERSION Report No. Version Description Approved ZKT-210520L1932E Rev.01 Initial issue of report May. 27, 2021 Project No.: ZKT-210520L1932E Page 6 of 29 2.1SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.249) , Subpart C Standard Section Test Item Judgment Remark FCC part 15.203 Antenna requirement PASS FCC part 15.207 AC Power Line Conducted Emission N/A FCC part 15.249 Fundamental &Radiated Spurious Emission Measurement PASS FCC part 15.249 (a)(2) 20dB Channel Bandwidth PASS FCC part 15.205 Band Edge PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Project No.: ZKT-210520L1932E Page 7 of 29 2.11.1 TEST FACILITY Shenzhen ZKT Technology Co., Ltd. Add. : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China FCC Test Firm Registration Number: 692225 Designation Number: CN1299 IC Registered No.: 27033 2.21.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 Conducted Emission Test ±1.38dB 2 RF power conducted ±0.16dB 3 Spurious emissions conducted ±0.21dB 4 All emissions radiated(<1G) ±4.68dB 5 All emissions radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% Project No.: ZKT-210520L1932E Page 8 of 29 3. GENERAL INFORMATION 3.1 GENERAL DESCRIPTION OF EUT Product Name: Bluetooth 4.0 usb dongle Model No.: FX-8510A Model Different.: N/A Serial No.: N/A Hardware Version: H1.0 Software Version: S1.0 Sample(s) Status: Engineer sample Operation Frequency: 2402MHz~2480MHz Channel Numbers: 40 …

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EUT TEST PHOTO