Bluetooth 5.1 Adapter Fast Data Transmission Dual Mode HiFi Sound USB Wireless Bluetooth Dongle Adapter for Windows 7 8 8.1 10 111Extreme Speed Transmission: Bluetooth 5.1 technology provides faster data transmission speed, which can realize faster file transfer and fluent sound and video playback, providing a better user experience. 2Wide Compatibility: The adapter is compatible with for Windows 7/8/8.1/10/11 system, which can meet the needs of more users without system version limitation. 3Strong Stability: Bluetooth 5.1 has a stronger signal transmission ability, which makes the adapter have a more stable connection performance, whether it is for office or entertainment, it can maintain a stable connection. 4Dual Mode Support: Bluetooth 5.1 adapter can support both Classic Bluetooth and Bluetooth Low Energy (BLE) to meet the connectivity needs of different devices, such as headphones, keyboards, and mouses. 5HiFi Sound Quality: The Bluetooth 5.1 adapter supports HD lossless music transmission, providing better sound quality enjoyment so that users can better enjoy music and sound and video entertainment.