If it doesn’t appear in Device Manager after 2 minutes, move to Option 2.
As of 2025, UGREEN hosts drivers on their Google Drive or static servers. Here is the process: ugreen bluetooth 5.0 usb adapter cm390 driver
If your computer has , you must disable it before installing the UGREEN adapter to avoid hardware conflicts: Unplug the UGREEN adapter Open Device Manager (Right-click Start > Device Manager). If it doesn’t appear in Device Manager after