[Equipped with Bluetooth 5.3] Our Bluetooth adapter is equipped with the new version of Bluetooth 5.3. This product is designed to reduce the power consumption of wireless devices connected in this way. Bluetooth 5.3+EDR provides faster and more stable transmission. [Plug and play] Compatible with Windows 11/10/8.1/7; supports 32/64 bit. (Win 11/10/8 can be used by inserting without installing the drive) Note: Not compatible with Mac OS, Linux, car systems and TVs. The Windows 11 only supports the home version. [Multiple compatibility] Bluetooth adapter can realise a computer and other devices with Bluetooth protocol. For example, Bluetooth connections such as mobile phones, Bluetooth earphones, mice, keyboards etc. [Multiple connections] Bluetooth 5.3 adapter can connect 7 devices at the same time. Supports various protocols such as GAP, A2DP, HID OVER GATT, HSP, AVC, HFP, FTP. (Note: multiple audio devices cannot be used simul