Give your desktop or laptop computer Bluetooth capabilities with this UB400 Bluetooth 4.0 Nano USB Adapter from TP-Link. Nano-sized, this adapter is incredibly small and can conveniently be left inside your computer's USB Type-A port without getting in the way. When recognized by your Windows-based PC, you'll be able to use a host of Bluetooth devices with your computer. 2-year limited warranty. Black.