⚡【NOTE】This USB Bluetooth adapter is ONLY compatible with windows 11/10/8.1/8/7. It supports plug and play for Win 8.1/10/11 system. You need to install the driver manually for Windows 7 from the included mini CD or through the driver download link: //1drv.ms/u/s!AnDGPmD_JKgujBOYlLl_y3oLFwOu?e=SRgdwa | ⚡️【Bluetooth Adapter 5.1】Adopts the latest Bluetooth 5.1 chipset greatly reduces the power consumption of Bluetooth(BLE). Enhance anti-interference ability and stability, decrease the transmission efficiency loss caused by the interference of the 2.4 GHz frequency band and low the possibility of signal interruption, and it is backward compatible with Bluetooth V5.0/4.0/3.0/2.0/1.1 | ⚡️【Fast Transfer Rate】Supports the Enhanced Data Rate (EDR) technology, which greatly improves the transmission rate into Max 3MB/s, giving you a fast and lag-free wireless data connection between computer and Bluetooth devices. Easily enjoys music, transferring files & entertainment during work. | ⚡️【Broader Range】this adapter can grant you up to twice the speed and four times the coverage compared to Bluetooth 4.0. Applying the Class 2 radio technology, the transmission distance reaches 10m to 20m in an open place | ⚡️【Wide Compatibility】The PC Bluetooth adapter works with 32/64-bit Windows 11/10/8/7. It can also take full advantage of bandwidth to connect multiple Bluetooth devices simultaneously,such as Bluetooth headsets,speakers, mouse , keyboards, Printer and smartphones. It is NOT compatible with Mac OS, Linux, TVs, or Car Stereo. | ⚡️【Compact Size Design】Ultra small size design allows you to leave it on laptop or desktop, you can keep this Bluetooth dongle there and no need to remove it, it seamlessly gets plugged into a laptop without blocking the surrounding USB port. | ⚡️【Reliability】Enable wireless communication with Bluetooth-enabled computers, printers, phones and headsets. Utilize Bluetooth low energy) technology for energy-saving wireless connectivity.