Ugreen Bluetooth 50 Usb Adapter Cm390 Driver Install [extra Quality] May 2026

Step 1: Go to the official UGREEN support page: support.ugreen.com (Search for "CM390"). Step 2: Download the "UGREEN Bluetooth Driver Installer" (approx 35MB). Step 3: Run the .exe as Administrator (Right-click → Run as administrator). Step 4: Click "Install Driver" . The tool will automatically detect the CM390. Step 5: Wait for the command prompt window to close. Do not unplug the dongle. Step 6: Restart your PC. ugreen bluetooth 50 usb adapter cm390 driver install

Download the driver package corresponding to your Windows version. Extract the folder and run to begin the installation. Option B: Using the Included CD Insert the driver CD into your computer's CD-ROM drive. Open the CD folder, locate , and double-click it. Follow the on-screen prompts and click until finished. 2. Critical Setup Steps Disable Built-in Bluetooth : If your laptop already has internal Bluetooth, you disable it first to avoid conflicts. Go to Device Manager , right-click your internal Bluetooth adapter, and select Disable device before plugging in the UGREEN adapter. Restart Your PC : Once the installation reaches the final step, click Installing the driver for your UGREEN CM390 Bluetooth 5

Troubleshooting Common Issues

| 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). | Open the Start Menu and type "Bluetooth"

and restart your computer to ensure the drivers are fully active. 3. Connecting Your Devices

Step 4: Verify the Installation

1. Open the Start Menu and type "Bluetooth". Select Bluetooth and other devices settings.
2. If the installation was successful, you will see the toggle switch to turn Bluetooth "On".
3. Click Add Bluetooth or other device to test pairing with your headphones or mouse.

Check for the Icon: Once installed, a Bluetooth icon should appear in the lower-right corner of your taskbar.  Manual Driver Installation 

Music flowed clean and crisp. Evan leaned back, satisfied. The CM390’s firmware update option in the installer promised better stability; he accepted and let the utility apply the patch. A tiny progress notification climbed slowly, then completed. “Update successful,” it said. Evan felt oddly proud—a small, quiet victory.