Ugreen Bluetooth 5.0 Usb Adapter Cm390 Driver -

The UGREEN Bluetooth 5.0 USB Adapter (CM390) is a compact dongle designed to add wireless connectivity to PCs and laptops. While it is often plug-and-play for modern systems like Windows 10 and 11, installing the official driver is necessary for full functionality on older versions like Windows 7 or 8.1. Key Features & Benefits

Extended Range: Provides a reliable transmission distance of 20 to 30 meters in open spaces. ugreen bluetooth 5.0 usb adapter cm390 driver

Troubleshooting: If it doesn’t appear in Device Manager after 2 minutes, move to Option 2. The UGREEN Bluetooth 5

Issue 2: Bluetooth Icon Disappears After Sleep / Reboot

Cause: Windows power management turns off the USB port or the Bluetooth radio. Solution: Do not plug the adapter in yet

Conclusion: Master Your UGREEN CM390

The UGREEN Bluetooth 5.0 USB Adapter CM390 is one of the best $10-$15 investments you can make for an older PC. However, the hardware is only half the story. The UGREEN Bluetooth 5.0 USB Adapter CM390 driver is the real key to unlocking low-latency audio, stable file transfers, and seamless peripheral pairing.

Do not plug the adapter in yet.
Run the driver installer as Administrator.
After the installer finishes, restart the PC.
Now plug in the UGREEN CM390.
Windows will detect new hardware. If it asks for a driver location, point it to C:\Program Files (x86)\Realtek\Bluetooth or wherever the installer extracted the INF files.
Restart again.
Note on Windows 7: You may need the Windows 7 Platform Update (KB3020369 and KB3125574) for Bluetooth stack compatibility. Without this, the adapter may fail to pair.

Windows 10 & 11: These systems typically recognize the adapter automatically as soon as it is plugged into a USB port.

Windows 7 & 8.1: These versions require manual driver installation to function properly. Installation Methods: