*Note: Please check your computer system before use. Please check your computer system before use. Applicable system Windows 8.1/10/11(Mac ios system is not supported, Mac ios system is not supported!) . If you have any questions, please contact our customer service . Compatible: 1.Bluetooth 5.3/5.2/4.2/4.2 LE/4.0/2.1+EDR specification, supports A2DP/AVDTP/AVRCP/RFCOMM/HFP/HSP/SPP/HID and other protocols 2.Driver-free, plug and play. 3. 5 devices connected at the same time, can be connected to the mouse / keyboard / gamepad / speakers / headphones and other Bluetooth devices Product Parameters: Brand:ESSAGER Product Name:Bluetooth 5.3 Adapter Model:ES-BT13 Bluetooth version: 5.3 Material: PC+ABS Transmission distance: 10~20m Color: Black