The headset and wireless adapter are automatically paired together out of the box. But if manual pairing is needed, follow the steps below to pair the headset and wireless adapter.
1. While the headset is off, hold the power button until the headset status LED starts blinking red/green rapidly.

2. While the wireless adapter is plugged in, use a small tool (e.g. paper clip, SIM tray ejector, etc.) to press the button inside the pin hole until the adapter LED starts blinking rapidly.

3. Wait until both the headset LED and the USB adapter LED are solid.

The headset and wireless adapter are now paired together.