Bluetooth dongle Yealink BT51-C — USB adapter for wireless headset connectivity

Yealink BT51-C is a compact Bluetooth USB dongle designed to enable wireless headset connectivity for compatible Yealink phones and standard computers. The adapter provides plug-and-play operation to support hands-free calling, conferencing and unified communications. With simplified pairing and extended wireless range compared to built-in Bluetooth, the BT51-C allows users to move freely within the office or home workspace while maintaining stable audio connections.

Advantages

The Bluetooth adapter offers fast pairing and a reliable wireless link for headsets, reducing cable clutter and enabling mobility during calls. Its small form factor occupies a single USB port and requires minimal setup, while compatibility with supported Yealink endpoints and common operating systems makes it a practical addition for hybrid work environments. The device is engineered to maintain stable audio performance and to integrate with existing phone and PC conferencing workflows.

Suitable for

• Office workers using Yealink desk phones who need wireless headset connectivity
• Remote employees using a computer for unified communications and softphone calls
• Conference rooms where quick headset pairing and hands-free operation are required
• Hot-desk or shared-desk environments where users switch headsets between devices

Key specifications

• Interface: USB-A plug for direct connection to host device
• Wireless standard: Bluetooth (version compatible with Yealink headsets and common Bluetooth audio profiles)
• Form factor: compact USB dongle for low-profile installation
• Compatibility: works with supported Yealink phones and standard Windows/macOS computers when supported by device firmware or drivers
• Audio support: hands-free calling and stereo audio depending on headset capabilities
• Power: USB-powered from host device

How to use

Insert the Yealink BT51-C into an available USB-A port on a compatible Yealink phone or computer. Allow the host device to recognize the adapter and install any required drivers or firmware updates if prompted. Activate pairing mode on the BT51-C following the vendor instructions, then place the Bluetooth headset into pairing mode to establish the connection. Once paired, select the headset as the audio device in the phone or computer audio settings and verify call audio and microphone operation.

Recommendations

Place the dongle in a USB port with direct line of sight to the headset for optimal range. Keep the headset firmware up to date and follow Yealink guidance on compatibility to ensure consistent audio quality. If using in a shared workspace, unpair and clear stored devices when transferring the adapter between hosts to avoid automatic reconnection issues.