You can use this for a blog post, help desk article, user manual, or FAQ section.
These codes mean Windows cannot communicate with the hardware properly.
UGREEN stands behind the CM390 with dedicated technical support. According to the official product support status page, the CM390 was last updated on August 8, 2024, and remains in active support with a standard two-year warranty period extending through August 8, 2026.
Before plugging in your new UGREEN adapter, you must disable any existing Bluetooth hardware. Multiple Bluetooth drivers will conflict, causing installation failures. Press Windows Key + X and select . Expand the Bluetooth section.
UGreen’s official support page rarely hosts the Windows 11 driver directly, but they provide a link to a virtual CD. ugreen bluetooth 50 usb adapter cm390 driver install
. Windows will recognize the new hardware and attempt to install the necessary drivers automatically. This process usually completes within a few seconds.
“You’re not unknown,” she whispered. “You’re a CM390.”
Have you already on your PC?
containing the extracted driver files (the same folder you downloaded from UGREEN’s website). You can use this for a blog post,
Right-click your internal Bluetooth adapter (e.g., Intel Wireless Bluetooth or Generic Bluetooth Radio ). Click and confirm. 2. Disconnect the Adapter
Download "Bluetooth Version Detector" (free tool). Run it. It will show the active version.
The is a compact Bluetooth 5.0 USB dongle designed to add wireless connectivity to desktops or laptops running Windows. While many modern versions of Windows will auto-install the driver, some systems require a manual installation.
Once the installation finishes, restart your computer to finalize the driver integration. 4. Verifying the Installation To confirm the adapter is working correctly: Open Device Manager . Look under the Bluetooth section. According to the official product support status page,
Device Manager → Bluetooth → Right-click your adapter → Properties → Advanced tab. Look for "LMP (Link Manager Protocol) version".
The adapter is compatible with Windows 11, 10, 8.1, and 7. USB Port: A free USB 2.0 or 3.0 port.
: If your computer has built-in Bluetooth, disable it first through Device Manager to avoid conflicts with the new adapter.