Ugreen Bluetooth 5.0 Usb Adapter Cm390 Driver [new] Instant

The UGREEN CM390 is compatible with:

After reboot, the adapter will appear in Bluetooth settings.

| 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. |

You can set up the adapter using the plug-and-play feature or manual installation methods: Automatic Installation (Windows 10/11)

Fully supported. Requires manual driver installation; plug-and-play is not available. ugreen bluetooth 5.0 usb adapter cm390 driver

If the adapter is plugged in but not pairing, remove the device from Windows "Bluetooth & other devices" settings and try pairing again. Summary of Technical Specifications CM390 / 80889

: The adapter uses the Broadcom BCM20702A0 chipset, known for reliable stability and native support in older Windows versions.

Here are a few expert tips to get the most out of your UGREEN CM390 adapter:

Bluetooth 5.0 signals can be disrupted by physical barriers or data bottlenecks. The UGREEN CM390 is compatible with: After reboot,

Yes, but you must download the driver from UGREEN’s website. Windows 7 lacks native Bluetooth 5.0 drivers. Also, you need to have installed the KB3020369 and KB3172605 updates for USB 3.0 support.

Press or F7 to select Disable driver signature enforcement . Re-run the setup.exe file as an administrator. Frequent Disconnections or Audio Stuttering

Ensures the adapter operates at its maximum potential speed and range.

This can occur if your antivirus software is blocking the installation or if Windows User Account Control (UAC) is interfering. Temporarily disable your antivirus software before running the installer. Right-click setup.exe and select "Run as administrator" to ensure the installer has full system access. | | Bluetooth on/off toggle is missing |

Ensure you're running a relatively recent kernel. Users have reported success with kernel versions 6.1.53 or higher.

To get your working perfectly, you can download the official software directly from the UGREEN Download Center by searching for its product model number: 80889 . While modern Windows operating systems often recognize the dongle instantly, installing the dedicated Realtek driver package is highly recommended to unlock advanced audio codecs, maximize data speeds, and achieve a stable connection for up to 5 simultaneous wireless devices . 📘 Overview of the UGREEN CM390 Dongle

sudo nano /etc/modprobe.d/btusb.conf

, follow these steps to install the driver and pair your devices. Note that this adapter is compatible with Windows 7, 8.1, and 10. Go to product viewer dialog for this item. (official model number