Search for the product model number (this is the specific SKU for the CM390).
If your package included a mini-CD and your PC has an optical drive, you can use the files located there. UGREEN CM390 Bluetooth 5.0 USB Adapter User Manual
Before you begin, ensure you have the correct driver for your operating system (Windows 7, 8.1, 10, or 11). Navigate to the UGREEN Download Center .
To set up the , you must install the specific Realtek driver to enable features like EDR (Enhanced Data Rate) and stable multi-device support. While some Windows versions might attempt a basic "Plug and Play" setup, a manual driver installation is strongly recommended to ensure full compatibility with devices like headsets, game controllers, and keyboards. Preparation and Driver Retrieval
Download the ZIP file containing the package. Option 2: Installation CD
