【Bluetooth 5.1 Adapter】Adopts the latest Bluetooth 5.1 chipset, Compared with the Bluetooth 5.0 dongle, the Bluetooth 5.1 pc optimizes power consumption and stability with better transmission speed and anti-interference ability. Let the Bluetooth USB flash drive use more smoothly and add Bluetooth function to your non-Bluetooth device, Backwards compatible with Bluetooth 4.2/4.1. | 【Wide Compatibility】USB bluetooth 5.1 is compact and lightweight. Size is only 29*14.4*7mm, Compatible with Windows 7/8.1/10/11 operating system. which can upgrade your computer without bluetooth function, the transmission rate is up to 3Mbps. Note: Not compatible with Mac OS, Linux, TV, Car Stereo (Win11/10/8 Plug & Play under Internet) | 【Multi-Device Connection】Our Bluetooth USB flash drive can connect multiple Bluetooth devices at the same time. for example: Bluetooth headset/speaker/gamepad/keyboard/printer/mouse or smartphone etc. Note: Only one Bluetooth device can be connected on the same frequency | 【20M Signal Transmission】Our Bluetooth 5.1 also has a strong signal, significantly improve the anti-interference ability and stability, in the open space the transmission distance can reach up to 20 meters. ideal for enjoying music at home. | 【Driver Installation】(Win7 and win7 and above support free driver installation, plug and play, installing a dedicated BT driver will make it more convenient to use) can download our driver, you can connect after the installation is complete, restart the computer as required.