Bluetooth USB 2.0 Micro Adapter Dongle Bluetooth V2.0 + EDR, A2DP Compatible Backwards compatible with Bluetooth V1.1 & V1.2 Range: Up to 20M, Data Transfer Rate: 3 Mbps / sec Driverless operation on Windows XP, Windows Vista, Windows 7, and Ubuntu Low-profile design is perfect for both laptop and desktop computers