BT81 long range bluetooth 5.4 usb adapter.The different functions from regular BT dongle are:The maximum accessible connection distance can reach 393 feet. Can connect 5 different devices simultaneously.You can fully use the USB BT Adapter to connect multiple devices simultaneously, time, such as Bluetooth speakers, keyboards, headsets, and mice BT81 Plug and Play: Supports plug and play functionality for Windows 8.1, 10, and 11. Note: BT81 is not compatible with Mac, Linux. The BT81 is PC only, so the Xbox/PS4/PS5 controller can be used on the PC, not directly on the Xbox/PS4/PS5. Two BT81s cannot be paired High-Fidelity Audio: USB Bluetooth Adapter is equipped with the latest 2024 Bluetooth 5.4 technology, optimizing the transmission delay and connection defect problems of the old Bluetooth 5.3. It supports Dual mode (BR/EDR+ Bluetooth Low Energy) to achieve low energy consumption, high speed, and a more stable connection with less sound quality loss Fully Compatible: Backward compatible with BT 5.3/5.2/5.1/4.2/4.0. What Can I do if the Bluetooth adapter can not work?: Ensure there are no other Bluetooth devices installed on the computer. If there are, disable all existing Bluetooth devices in "Device Manager", then insert the adapter and try again Note :1. Mac OS and Linux computers are not supported 2. Can not directly on PS3, PS4, PS5, TV, set-top box, car stereo system, XBOX and other devices. 3. Note to Apple users: This Bluetooth adapter does not support data transmission for iPhone, iPad and other devices To Install The Driver: The product requires driver installation. Please contact customer service to obtain the driver installation link. BT81 is bluetooth desktop pc,Long Range USB Bluetooth Dongle,USB Bluetooth5.4 Adapter for PC，The Bluetooth 5.4 adapter is used on computers and can connect Bluetooth mice, keyboards, speakers, headphones, etc. through Bluetooth.