Bluetooth adapter adopts the latest Bluetooth 5.3+EDR technology, backwards compatible with Bluetooth V5.0/4.0/3.0/2.1/2.0.EDR+BLE configuration, enhance stability and anti-interference and reduce transmission efficiency loss due to 2.4GHz frequency band interference.Compatible with 32/64-bit Windows 10/8/8.1/7 (NOT support Mac OS, Linux, TV, Car Audio)Compatible with Bluetooth keyboard/Bluetooth mouse/Bluetooth earphone/Bluetooth speaker, mobile devices.Easily add Bluetooth audio capability to devices that output audio through the computers USB port.