The Micro Bluetooth USB (Universal Serial Bus) Adapter (Model TBW-107UB) networks Bluetooth enabled devices such as cell phones, keyboards, & headsets. Slightly larger than the size of a penny, simply plug this micro-device into an available USB (Universal Serial Bus) port on your laptop or desktop & experience exceptional Bluetooth connectivity. Connect as many as 7 Bluetooth devices at distances of up to 10m (32.8ft). Enhanced Data Rate (EDR) technology transfers your data quickly. Adaptive Frequency Hopping (AFH) minimizes interference from other wireless devices & advanced wireless encryption protects your network. Connect Bluetooth-enabled devices such as printers, headsets, audio/video devices & mobile phones Compliant with Class II Bluetooth V2.1+ compliant Enhanced Data Rate (EDR) support Bluetooth IVT software technology Adaptive Frequency Hopping (AFH) support Enhanced SCO (e SCO) for crisp & clear voice quality Compatible with Windows 7/ Vista/XP/2000 Communicates wirelessly up to 10 meters (32.8ft.) (depends on environment) Trouble free Plug & Play installation 2-year limited warranty