![](https://blog.provu.co.uk/wp-content/uploads/2022/02/How-to-pair-BH72-with-BT51.jpg)
Step 1:
Download and install Yealink USB Connect (version: 0.34.13.0 or higher) on your PC and then plug in the BT51 dongle.
Step 2:
Hold press the power key on BH72 about 5s to enter the pairing mode. The power light will flash red and green.
Step 3:
Click the Pair management of BT51 in Yealink USB Connect, click Refresh in the list of Pairable devices List, select the Bluetooth name of the headset and click Start pairing.
![](https://blog.provu.co.uk/wp-content/uploads/2022/02/1.png)
If it is paired successfully, it will be shown in Paired devices list.
![](https://blog.provu.co.uk/wp-content/uploads/2022/02/2.png)
Note:
You need to take out the BT51 and BH72 headset to pair one by one, then put the BH72 and BT51 back to the original box accordingly after being paired.