UNIVERSAL COMPATIBLE: The Bluetooth USB adapter is compatible with 32 bit and 64 bit Windows 10 / 8.1 / 8 / 7 / XP, Vista, and etc. The USB Bluetooth adapter is designed for Windows. Plug and Play for Windows 8 and higher system. Driver only needed when your Windows 7 and lower system need to connect audio device. The Bluetooth USB dongle also supports Bluetooth speakers and headphone, Bluetooth Mic, Bluetooth keyboards / Mouse, Mobiles, PC Plate, and more. | SUPPORT MULTIPLE DEVICES AT ONCE: The USB dongle adapter supports more than two devices connected simultaneously, A Bluetooth mouse, Bluetooth headsets, and Bluetooth keyboard can all communicate clearly with the USB wireless adapter and potentially open up a whole new realm of possibilities for how customers enjoy their computers. The Bluetooth USB dongle is fully qualified Bluetooth 4.0 system and it smoothly supports backward compatible Bluetooth V3.0/2.1/2.0/1.1 and Bluetooth Low energy. | BLUETOOTH VERSION 4.0 & 165 FEET BLUETOOTH SIGNAL: The Bluetooth USB adapter adopts Bluetooth 4.0 version to provide you with fastest data and audio transmission. The wireless transmission range can be up to 165 feet in open space. The Wireless USB Bluetooth dongle adapter supports transmit data and audio files. If your desktop or laptop does not have Bluetooth function, the USB Bluetooth dongle 4.0 can endow your PC with Bluetooth function, you can easily connect a Bluetooth-enabled device. | LOWER POWER CONSUMPTION&SECURIT: Bluetooth dongle with integrated FCC and CE security settings automatically in place, there’s no need to worry about potential hackers getting into customers’ business. All of the communication between the adapter and customers' paired devices are protected by advanced encryption that authenticates each connection. Using USB dongle takes very little power which is 1.2 to 3.6 VI/O. This makes the Bluetooth dongle an ideal tool to use for electronic devices. | Extremely small: small size allows you to leave it on laptop or PC, no need to remove, it seamlessly gets plugged into a computer/laptop without blocking surrounding USB ports, save space