BT-510U/BT-520U Class 1 / Class 2 Bluetooth V2.0 USB Adapter User's Manual

3.2.3 Detecting services
1. Select the device name from [Device List] and click on the [Next] button.
Bluetooth device detection will commence.
Note
When a service has been detected, a window prompting you to enter the
Bluetooth passkey (PIN code) may appear. Please enter the passkey and click
on the [OK] button.