may not work unless you first in the Windows Device Manager. Model Specifics :

This often happens if you try to use the older 5.0 driver for the 5.3 hardware. Ensure you are searching for the ATS2851 chipset driver if you are on an older OS.

Once you have the driver file (usually a .exe or a .zip folder):

The is a high-quality, driver-friendly dongle that provides a genuine “top” experience when set up correctly. The best driver source is either Windows Update or UGREEN’s official support page . Avoid third-party driver tools. With proper installation, it delivers stable, low-latency Bluetooth 5.3 performance for peripherals and audio devices on Windows, Linux, and (with effort) macOS.