Features: 1. This Bluetooth 5.4 Adapter contains low power chip, Bring you a low latency, Mini But powerful Bluetooth applications This Bluetooth 5.4 Adapter can use as a receiver or transmitter between 2 devices that with Bluetooth function. 2. This Bluetooth 5.4 Adapter can use as a receiver or transmitter between 2 devices that with Bluetooth function. 3. Supports simultaneous connection of multiple devices 4. Support operating system: Windows 7(need driver), Windows 8.1/10/ 11 (For Win 8.1/10/11, driver free, plug and play) 5. This Bluetooth 5.4 offers adapter offer plug-and-play functionality, Simply plug it in, and it's ready to use, without any need for additional setup or configuration. Specifications: Bluetooth version: 5.4 Also compatible with Bluetooth 2.0, 3.0, 4.0, 5.0, 5.1 and 5.3 Transmission distance: 20 meters Support protocols: A2DP, HSP, AVRCP ,HID, ACC, etc Support USB2.0/3.0 interface, you can use on Laptop or Desktop. Operating system: For Windows 7(need driver), Windows 8.1/10/ 11 (driver free, plug and play) This Bluetooth 5.4 Adapter can use as a receiver or transmitter between 2 devices that with Bluetooth function. Package includes: 1x Bluetooth 5.4 USB Adapter