Warm TIPS: The BT542 USB Bluetooth adapter is compatible with PC Laptop Computer Windows 11/10/8.1/7.Applies the latest Bluetooth 5.4 technology and is backward compatible with Bluetooth 5.3/5.0/4.2/4.0/3.0/2.1/2.0/1.1.BT542 can turn Non-Bluetooth PC/Laptop/Desktop into latest Bluetooth 5.4 function capable Plug n Play or No need to Driver: Plug and Play to work with Windows 11/10/8.1; Supports Win7 (Driver required for Win7 and could be downloaded from website not of charge,). But please NOTES: It's not compatible with Mac OS, Linux, Car Stereo systems, XBOX or TV. 2. It cant be used directly on PS3, PS4, PS5, Switch, or Xbox Console; but it works with Game Controllers Upgraded Latest Bluetooth 5.4 Technology: 2024 Bluetooth 5.4 improves the stability of the connection and reduces signal interruption. Optimizing the transmission delay and connection defect problems of the old Bluetooth version. Our Bluetooth 5.4 dongle will bring you a faster, more stable, and smarter