Upgraded Bluetooth 5.3 Adapter: This bluetooth adapter for pc uses the latest upgraded Bluetooth 5.3 BR+EDR technology, greatly improves the stability of the connection data transfer speed, reduces the possibility of signal interruption and power consumption. | Up to 5 Devices Sync Connected: UGREEN Bluetooth dongle for PC supports up to 5 different types of Bluetooth devices to be connected at the same time without interfering with each other, such as Bluetooth mouse/keyboard/mobile phone/headphones, etc. If Bluetooth audio devices of the same type (such as speakers/headphones) are connected, only one device can play music. | Plug and Play: The Bluetooth adapter is developed for Windows systems only and does not support other systems. No driver installation is required under Windows 11/10/8.1. Windows 8/7, Linux, and MacOS are not supported. | Mini Size: An extremely compact Bluetooth stick that you can leave on your laptop or PC without removing it.The compact size does not interfere with other USB ports. Convenient to carry, no space occupation. | Note: It can not be used directly on PS3, PS4, PS5, Switch, or Xbox Console; but it works with Game Controllers. | 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. (For detailed information please read the user manual)