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.
To install the driver for the , you can use the included installation CD or download the latest version from the UGREEN official website . Installation Prerequisites
However, a common frustration among new users is the driver installation. Unlike a standard flash drive, this Bluetooth adapter requires proper driver setup to function. If you have searched for “UGreen Bluetooth 5.0 USB Adapter CM390 driver install” because your device isn’t working out of the box, you are in the right place.
Windows loves to cut power to USB devices to save energy. This destroys Bluetooth stability. ugreen bluetooth 50 usb adapter cm390 driver install
To function properly, the CM390 requires a driver to be installed on the host computer. The driver enables the operating system to recognize the adapter and manage Bluetooth connections. The installation process may vary depending on the operating system (Windows, macOS, Linux, etc.).
Right-click your internal Bluetooth adapter (e.g., Intel Wireless Bluetooth or Generic Bluetooth Radio ). Click and confirm. 2. Disconnect the Adapter
If you inserted the dongle and see "Unknown USB Device (Device Descriptor Request Failed)" or nothing happens, you need to follow the manual steps below. UGreen is a peripheral assembler
What you are trying to connect (headphones, controller, etc.)
Before inserting the adapter or downloading files, complete these two preparatory steps to prevent driver conflicts: 1. Disable Built-in Bluetooth
Click the button. The file will download as a compressed archive, typically a .zip or .rar file, labeled around the Realtek Bluetooth 5.0 driver set. Step 3: Install the Driver on Windows To install the driver for the , you
If your system lacks a CD drive or automatic detection fails: : Go to ugreen.com/pages/download. Search : Enter the product SKU 80889 .
The Ugreen CM390 Bluetooth 5.0 USB adapter is a popular, compact solution for adding wireless connectivity to desktop computers and laptops. While Windows 10 and Windows 11 often feature plug-and-play compatibility for basic Bluetooth tasks, installing the dedicated official drivers unlocks the adapter's full performance, stability, and audio codec capabilities.
Once connected, Windows will automatically detect the new hardware and install the necessary drivers. This process should only take a few seconds. You’ll likely see a notification in the bottom-right corner of your screen indicating that drivers are being installed or that your device is ready to use.