Ugreen Bluetooth 5.0 Usb Adapter Cm390 Driver Guide

The UGREEN Bluetooth 5.0 USB Adapter (Model CM390) Go to product viewer dialog for this item.

• v1.0 (2020): Initial release for Windows 10.
• v2.5 (2022): Added Windows 11 support and fixed audio latency.
• v3.2 (2024): Added BLE 5.3 compatibility patches and security updates.

Issue 1: “Driver is not intended for this platform” (Error Code 10)

| Problem | Solution | |--------|----------| | Adapter not detected at all | Try a different USB port. Avoid USB hubs. | | Bluetooth on/off toggle is missing | Uninstall the device in Device Manager, unplug, restart PC, then plug back in. | | Pairing fails or devices disconnect | Remove old Bluetooth drivers (from other dongles) first. Then install CM390 drivers fresh. | | Works in Windows but not in Linux | Install firmware-realtek as shown above. | ugreen bluetooth 5.0 usb adapter cm390 driver

Driver Features and Performance

• lsusb
• dmesg | grep -i bluetooth
• sudo systemctl status bluetooth
• bluetoothctl show / devices / pair

Step-by-Step for Ubuntu/Debian-based distros: