BLUETOOTH 5.1 ADAPTER FOR PC: USB BT adapter receiver helps to add BT functionality to USB devices without BT, helping to achieve wireless connectivity for your daily use. It applies the latest Bluetooth 5.1 version and is backward compatible with Bluetooth 2.1/3.x/4.x. | FASTER SPEED, LONGER RANGE: BT 5.1 dongle for computer enables faster and wider coverage, and its transferring data is twice as fast as before and 4 times the range of BLE. It also has been upgraded to realize lower energy consumption to conserve power and improve the anti-interference of transmission. | PRACTICAL USE: supports plug and play, can make your computers connected to Bluetooth devices such as Bluetooth printers, speakers, headphones, headsets, keyboards, mouse and others with high responsiveness. | STRONG COMPATIBILITY: Mini Bluetooth 5.1 adapter supports for win 7, for win 8.1, for win 10, for win 11, for Linux and other operating systems. | MINI USB DONGLE: Compact and small USB BT 5.1 adapter allows you to leave plugged in your laptop or PC without blocking or interfering surrounding USB ports. It will not take up too much space and conveneint to carry and store.