Bluetooth 5.0 Adapter: This Kinivo dongle uses Bluetooth v5.0 Class 2 with BLE technology for enhanced connection stability. Backward compatible with Bluetooth 4.0. PLUG & PLAY: Easy plug & play for Ubuntu, Windows 11/10. Diver installation needed for Win 8.1, 8 with default Bluetooth stack. Note: Dongle may not work with TWS earbuds