FCC ID: T2C-BT51AV2 Bluetooth USB Dongle

Label Information Label Label Location Trade Mark:Yealink Product Name:Bluetooth USB Dongle Model:BT51A 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. IC:CAN ICES-3(B)/NMB-3(B) FCC ID:T2C-BT51AV2 IC:10741A-BT51AV2 HVIN:BT51AV2 Yealink Network Technology Co.,Ltd No.666 Huan Rd,Huli District Ximen City, Fujian, P.R. China Made in China Stick the label on page 2 of user manual

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com Attestation Letter Date: 2023/09/28 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 2.911(d)(5)(i) Filing FCC ID: T2C-BT51AV2 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 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. Sincerely, Signature Contact Person: Stone Lu Title: Vice General Manager CFR 47 2.911(d)(5)(i) Attestation Letter

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com Attestation Letter Date: 2023/09/28 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 2.911(d)(5)(ii) Filing FCC ID: T2C-BT51AV2 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 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 Contact Person: Stone Lu Title: Vice General Manager CFR 47 2.911 (d)(5)(ii) Attestation Letter

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com Date: 2023-09-28 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir/Madam, Our product Bluetooth USB Dongle, model: BT51A, FCC ID: T2C-BT51AV2, for use in America, this product only supports BDR (GFSK), EDR (/4-DQPSK). The other functions and modes has been shielded by the manufacturer using the software, the end user has no capability to activate it. Sincerely Yours, Signature:

Stone Lu Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com FCC Authorization Date: 2023-09-28 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern:

We, YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD., the undersigned, hereby authorizes Bay Area Compliance Laboratories Corp. (Linkou) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Linkou) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature:

Stone Lu Vice General Manager QA-FR-170-B 7/29/2014

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com FCC Confidential Authorization Date: 2023-09-28 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: T2C-BT51AV2 In accordance with Sections 0.457 and 0.459 of the Commissions Rules, YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. hereby requests long-term confidential treatment of information accompanying this application as outlined below:

Block Diagram Schematics Operation Description As well as short-term confidential treatment of information accompanying this application for a period of 180 days after grant is issued as outlined below:

Internal Photos Users Manual External Photos Test Set-up Photos The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature Stone Lu Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com FCC certification No. Cover Letter We, YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD., hereby submit justification for placing the FCC certification No. in the associated users manual and packaging. According to the FCC regulation, the FCC certification No. should be printed on the dongle, but as the dongle are too small to print the label (FCC ID: T2C-BT51AV2 , it will be moved to the user manual and packaging. The details are as below:

A. Side surface (A): The side surface does not provide enough physical space to fit the printing of the FCC certification No. according to below reference picture. B. Top cover (B): The top cover does not provide enough physical space to fit the printing of the FCC certification No. according to below reference picture. C. There are many contents in the label, including the certification requirements of other countries. The product Dimensions (L*W*H) is 21.2*15.08*5.4mm, there is not enough physical space for such a large label Conclusion: Based on the above description of area A to B and C, we conclude that the device is unquestionably too small for enabling the FCC certification No. to be printed onto any surface. We therefore request to move the FCC certification No. to the users manual and packaging. Stick the label on page 2 of user manual Label:

Best regards, Signature:

Stone Lu Vice General Manager 2023/09/28

U.S. AGENT LETTER OF ATTESTATION Date: 2023-09-28 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 2.911(d)(7) Filing FCC ID: T2C-BT51AV2 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. certifies that, as of the date of the filing of the application, Iconsigh Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-

related proceeding involving the equipment. Iconsigh Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information:

Company Name: Iconsigh Inc. Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: benjamin.kaur@iconsigh.com y (p((p(p ted a e):

Signed by (printed name): Benjamin Kaur

Signature:

e ja Applicant: YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. Address: No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China FRN: 0014702682 Tel: 86-592-5702000 Email: chenjl@yealink.com Signed by (printed name): Stone Lu Signature: