Bluetooth 5.3 Adapter: Applies the latest Bluetooth 5.3+EDR technology, compatible with Bluetooth 5.2/4.2/4.2 LE/4.0/2.1+EDR, and supports Dual mode (BR/EDR+ Bluetooth Low Energy) to achieve low energy consumption and high speeddata transmission rate. Quick response and better anti-interference. | Up to 5 Devices Sync Connected: You can fully use the USB Bluetooth Adapter to connect multiple devices simultaneously, Can work with 5 devices at the same time, such as Bluetooth speakers, keyboards, headsets, mice, Which means that you can listen to high-quality music while using the keyboard or other devices. | 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. (Detailed information please read the user manual) | Plug & Play: No need to install any drivers, just plug the USB wireless adapter into your computer, then you can use it directly. You can use the Bluetooth function at any time. Greatly improve your work efficiency and save your time. This bluetooth dongle for PC only supports Windows 11/10/8.1. | NOTE: 1. It's not compatible with Mac OS, Linux, Car Stereo systems, XBOX or TV. 2. It can not be used directly on PS3, PS4, PS5, Switch, or Xbox Console; but it can be paired with Game Controllers. 2. It only can be paired with bluetooth devices, like bluetooth haedphone, bluetooth speakers, etc | Note for Apple Users: This Bluetooth Adapter does not support Mac OS or iPhone.