Ugreen Bluetooth 50 Usb Adapter Cm390 Driver Install =link= May 2026

0 USB Adapter (CM390) driver on your system. Driver Installation for UGREEN Bluetooth 5.0 (CM390)

Part 6: Verifying a Successful Installation

How do you know you are done? A successful CM390 driver install looks like this: ugreen bluetooth 50 usb adapter cm390 driver install

If your system lacks a CD drive or automatic detection fails: Official Website: Go to ugreen.com/pages/download. Search: Enter the product SKU 80889. 0 USB Adapter (CM390) driver on your system

Once installed correctly, the CM390 is a rock-solid adapter. You will enjoy low-latency audio, simultaneous connections to multiple devices (keyboard + mouse + headphones), and the full 20-meter range of Bluetooth 5.0. Plug the UGREEN adapter into the computer

Download and run the driver file, then restart your computer when prompted.

  1. Plug the UGREEN adapter into the computer.
  2. Right-click the Start button and select Device Manager.
  3. Look for an entry usually labeled "Bluetooth USB" or "Unknown Device" (it may have a yellow exclamation mark).
  4. Right-click that entry and select Update driver.
  5. Select "Browse my computer for drivers".
  6. Click "Browse" and select the folder where you extracted the driver files in Step 2.
  7. Click Next. Windows will find the correct .inf file and install the driver.
  1. Remove Old Bluetooth Adapters: If you have an old internal Bluetooth card or another dongle, disable it in Device Manager (Windows + X > Device Manager > Bluetooth > Right-click > Disable device). Two active Bluetooth radios will confuse Windows.
  2. Plug into the Right Port: The CM390 is Bluetooth 5.0, which benefits from USB 3.0 (Blue port). However, for driver installation, use a USB 2.0 port initially. USB 3.0 interference sometimes confuses the driver installer.
  3. Disable Airplane Mode: Ensure Windows is not in Airplane mode. Go to Settings > Network & Internet > Airplane mode > Off.

Common Issues and Troubleshooting

Kernel Support: The RTL8761B chipset is supported in modern kernels (5.x+). The driver module is typically btusb.