Right-click the Speaker icon in your taskbar and select .
Depending on your operating system, the installation process varies:
Never download “driver updater” software or from unknown sites like driver-fixer.com . The safe sources are: ugreen bluetooth 5.0 usb adapter cm390 driver
Ensures the adapter operates at its maximum potential speed and range.
Insert the provided small driver disc into your CD-ROM drive. Right-click the Speaker icon in your taskbar and select
If UGREEN’s link is broken, use the generic Realtek driver:
While Windows 10 and 11 often automatically install drivers for this device, a manual driver installation is sometimes required for optimal performance, or if Windows fails to recognize the device. How to Find the Driver Insert the provided small driver disc into your CD-ROM drive
Modern computers often lack CD drives. Using the official online download page is the recommended method in 2026.
Some users have reported that Windows 10 may experience conflicts if a built-in Bluetooth driver is already present on the system. If the CM390 doesn't work after automatic installation, you may need to disable the existing Bluetooth driver first. Go to Device Manager , find any existing Bluetooth adapters, right-click them, and select "Disable device." Then, unplug and re-plug the CM390 to trigger a fresh driver installation.
If your computer does not automatically recognize the adapter, you can install the driver using these official methods: Direct Download from UGREEN Navigate to the UGREEN Download Center Search for the part number to find the specific driver for the Download the ZIP file, extract it, and run Using the Provided CD