Ugreen Bluetooth 50 Usb Adapter Cm390 Driver Install Portable

| Problem | Solution | |---------|----------| | Device not detected | Try a different USB port (preferably USB 2.0 if USB 3.0 fails). | | Driver installs but Bluetooth doesn’t work | Uninstall any existing Bluetooth drivers (like from Intel or Broadcom) first. | | “Driver is unsigned” error (Windows 7/8) | Restart and disable driver signature enforcement (press F8 during boot). | | Can’t find the device in Device Manager | Check if the LED on the dongle lights up. If not, test on another PC. | | Bluetooth mouse/keyboard lag | Install the latest driver from Realtek (v1.9+ recommended). |

. If your computer already has an internal Bluetooth adapter, it’s strongly recommended to disable it in Device Manager before installing the UGREEN driver. The two adapters can interfere with each other, causing connection issues.

You are not just installing "UGreen drivers"; you are installing Realtek Bluetooth drivers . This distinction is vital when searching for solutions. ugreen bluetooth 50 usb adapter cm390 driver install

Every UGREEN CM390 package includes a CD that contains the necessary drivers and installation software. If your computer has an optical drive, simply insert the CD, navigate to the appropriate folder for your operating system, and run the setup.exe file. The CD is particularly useful if you’re installing the adapter on a computer without an active internet connection.

The Ugreen CM390 relies on the RTL8761BU chipset firmware, which is built into modern Linux kernels. If your system does not recognize the device, you may need to manually add the firmware file. Open your terminal ( Ctrl + Alt + T ). Update your package repository: sudo apt update && sudo apt upgrade -y Use code with caution. Install the standard Linux firmware package: sudo apt install linux-firmware Use code with caution. | Problem | Solution | |---------|----------| | Device

A: Yes, but you need Windows 10/11 and a proper driver. After installation, go to Bluetooth settings → Add Device → AirPods (hold the button on the AirPods case).

Click the download link on that page to get the driver package. It is typically distributed as a ZIP file. Once downloaded, navigate to your Downloads folder and extract the contents of this ZIP file to a location you can easily find, such as your Desktop. | | Can’t find the device in Device

Most users running Windows 10 or 11 will find that the UGREEN CM390 works immediately after plugging it in. Here’s what to expect: