This method provides more control and is useful if the standard installer has issues.
If the driver does not install automatically, click on > Optional updates . ugreen bluetooth 50 usb adapter cm390 driver install
Ensure there is no yellow exclamation mark next to the device name. Troubleshooting Common CM390 Installation Issues Error: "Bluetooth device not found" Try switching the adapter to a different USB port. This method provides more control and is useful