FCC ID: T2C-BT51C Bluetooth USB Dongle

WARNING:pdfminer.pdfpage:The PDF <_io.BufferedReader name='/Volumes/Scratch/Incoming/eg-scratch/5995365.pdf'> contains a metadata field indicating that it should not allow text extraction. Ignoring this field and proceeding. Use the check_extractable if you want to raise an error in this case BT51C Bluetooth USB Dongle Yealink BT51C is a plug-and-play USB Bluetooth dongle. It connects your Yealink BH72/

BH76 to your PC to ensure a fast and reli-able Bluetooth connection. BT51C guarantees a first-rate range of up to 100ft/30m, allowing you to move away freely from your laptop during a call. As for the audio, by incorporating sound quality features to BT51C, you can enjoy the natural sound even when you are away from your desk. Meanwhile, the music will be streamed in amazing HiFi quality via A2DP. Key Features and Benefits

> Compatible with BH72/BH76

> Reliable connection

> Up to 100ft/30m wireless range

> Easy to use

> Plug and play Feature PC connection: USB 2.0 (USB-A/USB-C) Bluetooth range: Up to 100ft/30m Bluetooth profiles: HFP 1.7, A2DP 1.3, AVRCP 1.6 Bluetooth audio bandwidth: Narroband, Wideband, A2DP Firmware update via Yealink USB Connect app Visual indicator: 1 blue LED +1 red Led indicates pair-

ing and connection Physical Features OS compatibility (as audio device):

- Windows XP/SP3, Windows Vista 32-bit, Windows Vista 64-bit, Windows 7 32-bit, Windows 7 64-bit, Windows 8.1 32-bit, Windows 8.1 64-bit, Windows 10 32-bit, BT51C Windows 10 64-bit Windows 11 64-bit

- MAC OS 10.6 or later Compatible with BH72 Lite/BH72/BH76 Softphone support (call control):

- Fully compatible with Microsoft Teams/Skype for Business

- Compatible with most of PC softclients and, as a minimum, work as audio device Dimensions (L*W*H): BT51C: 16.15*14.5*9mm Operating environment: -10 to + 60 www.yealink.com YEALINK NETWORK TECHNOLOGY CO., LTD.Email: sales@yealink.com Web: www.yealink.comAbout YealinkYealink (Stock Code: 300628) is a global brand that specializes in video conferencing, voice communications and collaboration solutions with best-in-class quality, innovative technology and user-friendly experience. As one of the best providers in more than 140 countries and regions, Yealink ranks No.1 in the global market share of SIP phone shipments (Global IP Desktop Phone Growth Excellence Leadership Award Report, Frost & Sullivan, 2019).CopyrightCopyright 2022 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO., LTD.All rights reserved. No parts of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, photocopying, recording, or otherwise, for any purpose, without the express written permission of Yealink(Xiamen) Network Technology CO., LTD.Technical SupportVisit Yealink WIKI (http://support.yealink.com/) for firmware downloads, product documents, FAQ, and more. For better service, we sincerely recommend you to use Yealink Ticketing system (https://ticket.yealink.com) to submit all your technical issues.YEALINK(XIAMEN) NETWORK TECHNOLOGY CO., LTD.Web: www.yealink.comAddr: No.1 Ling-Xia North Road, High Tech Park, Huli District, Xiamen, Fujian, P.R.CCopyright2020 Yealink Inc. All rights reserved. FCC Caution:

Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. IMPORTANT NOTE:

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. FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. ISEDC Warning This device complies with Innovation, Science, and Economic Development Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions:

(1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR d' Innovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes :

(1) l'appareil nedoit pas produire de brouillage, et

(2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. The device is compliance with RF exposure guidelines, users can obtain Canadian information on RF exposure and compliance. Le prsent appareil est conforme Aprs examen de ce matriel aux conformit ou aux limites dintensit de champ RF, les utilisateurs peuvent sur lexposition aux radiofrquences et la conformit and compliance dacqurir les informations correspondantes. 3.label information Trade Mark:Yealink Product NameBluetooth USB Dongle Model :BT51C 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-3B/NMB-3B FCC ID: T2C-BT51C IC:10741A-BT51C Yealink Network Technology Co.,Ltd 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, P.R.C Made in China

Shenzhen Accurate Technology Co., Ltd. Project No.: SZNS220511-19755E-RF FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925) LABEL AND LOCATION Page 1 of 1

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com Date: 2022-06-23 Attestation Letter FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam, The RF chip, model: ATS2831, installed in our product Bluetooth USB Dongle, model: BT51C, FCC ID: T2C-BT51C, supports BDR (GFSK), EDR (/4-DQPSK, 8DPSK), and BLE functions. For marketing purpose, this chip will not support/enable BLE function. The BLE function has been shielded by the manufacturer using the software. Sincerely Yours, Signature:

Stone Lu Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com FCC Confidential Authorization Date: 2022-06-23 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-BT51C 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:

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:

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. Block Diagram Schematics Operation Description Internal Photos Users Manual External Photos Test Set-up Photos Sincerely Yours, Signature Stone Lu Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: chenjl@yealink.com FCC Authorization Date: 2022-06-23 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 Shenzhen Accurate Technology Co., Ltd. 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 Shenzhen Accurate Technology Co., Ltd. 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