Ugreen Bluetooth 50 Usb Adapter Cm390 Driver Install

: Supported on Windows 7, 8.1, 10, and 11. It is not compatible with macOS or iOS.

Windows should automatically find and install the drivers within seconds.

Technical Implementation and Analysis of the UGREEN CM390 Bluetooth 5.0 USB Adapter Driver Architecture

Manual driver installation is mandatory. The adapter will not function without the specific Realtek Bluetooth driver stack. ugreen bluetooth 50 usb adapter cm390 driver install

Locate your computer's built-in Bluetooth under "Bluetooth." Right-click and select . Unplug the UGREEN adapter and plug it back in.

Here are the three ways to get the CM390 working, ranked from easiest to most thorough.

If the driver is installed but audio playback on Bluetooth headphones is choppy: : Supported on Windows 7, 8

UGreen is a peripheral assembler. The CM390 typically uses a chipset. While UGreen provides a driver CD (which most modern PCs lack), Microsoft’s generic drivers often fail to initialize this specific chip correctly.

Find "Bluetooth" in the list, right-click your internal Bluetooth adapter, and select Disable device device.report 2. Driver Installation Methods

Features low audio delay (approx. 100ms), making it suitable for video and light gaming. Compatibility: Works with Windows (7/8.1/10/11) and Linux. It is not compatible with PS5, PS4, or Nintendo Switch. Driver Installation Guide Technical Implementation and Analysis of the UGREEN CM390

UGREEN recently released a unified driver tool. While the box says "No driver needed," this tool resolves 99% of installation issues.

Upon successful installation, the device manager should display "Realtek Bluetooth 5.0 USB Adapter" under the Bluetooth category without yellow exclamation icons. The "Services" tab in the device properties should list active services (A2DP, Handsfree, etc.).

The installation wizard stops with an error message, or the adapter still doesn’t work after installation.

Pro Tip: On Windows 11, go to . Look for "Realtek Semiconductor Corp. – Bluetooth – [Version Number]" and check the box. Click "Download & install".