This is where many users run into confusion, so let's be perfectly clear about what the UGREEN CM390 supports.
UGREEN Bluetooth 5.0 USB Adapter (Model CM390 / Part Number 80889)
Do not confuse the CM390 with the older CM388 (Bluetooth 4.0) or the CM491 (Bluetooth 5.3). Drivers are not interchangeable. ugreen bluetooth 5.0 usb adapter cm390 driver
If your OS did not auto-install the driver, follow these steps.
The UGREEN CM390 supports plug-and-play functionality in many cases. However, the correct driver is necessary for optimal performance. Here’s how to install it: This is where many users run into confusion,
UGREEN offers several Bluetooth adapters. Here's how the CM390 stacks up against other popular models:
Ensure the driver is fully updated to the latest version from the UGREEN website. If your OS did not auto-install the driver,
UGREEN officially notes that the product only supports Windows systems and is not compatible with Mac OS, Linux, car head units, TVs, or other non-Windows operating systems.
Enable Bluetooth on your target device (phone, headset, etc.) and set it to pairing mode.
| Operating System | Compatibility | Notes | | :--- | :--- | :--- | | | Supported | Requires driver download from the website. | | Windows 10 | Supported | Requires driver download. | | Windows 8.1 / 7 | Partial | Support exists but is increasingly legacy; may require older driver versions. | | macOS | Not Supported | macOS generally does not support third-party USB Bluetooth adapters due to strict vendor whitelisting. | | Linux | Supported (Manual) | Works on Ubuntu/Debian, but requires manual firmware installation ( rtl8761b_fw.bin ) due to licensing restrictions. | | Xbox / PlayStation | Not Supported | Consoles do not support generic USB Bluetooth adapters. |
: Visit the UGREEN Download Center and search for model 80889 .