Asus USB-BT21 - Manual (Page 23)

Providing Access to Other Bluetooth Devices
You can specify if you want to allow other Bluetooth devices to discover this computer. Also,
you can specify whether to allow all or none of the devices that discover this computer to
connect, or to allow only those devices that you designate to connect. The devices that you
designate must be within range, and must themselves be discoverable. Also, you can specify
the type of audio notification (if any) you want to receive in addition to a visual notification
when another Bluetooth device requests a Bluetooth security code.
NOTE: If you later clear the Let other Bluetooth devices discover this computer
check box, devices that have previously connected to this computer can still do so.
To specify which Bluetooth devices to allow to discover and connect to this computer
1. Open My Bluetooth Places.
2. Click View or modify configuration.
3. In Bluetooth Configuration, click the Accessibility tab and make the access
settings you prefer in the spaces provided.
NOTE: To prevent this computer from being discovered, clear the Let other
Bluetooth devices discover this computer check box.
Discovering Devices
You can set this computer to automatically look for other Bluetooth devices at a specific time