The UGREEN CM109 models No. 30443/30524/30722/30723 are all USB Bluetooth 4.0 is a small-sized Bluetooth adapter that plugs into the USB port of a computer, laptop or other compatible devices. It enables these devices to communicate with Bluetooth-enabled devices such as smartphones, tablets, and other peripherals wirelessly.
The adapter uses Bluetooth 4.0 technology, which provides low power consumption and improved data transfer rates compared to previous Bluetooth versions. It has a maximum range of approximately 33 feet (10 meters) in open spaces and can connect to multiple devices simultaneously.