Ugreen Bluetooth 5.0 Usb Adapter Cm390 Driver
As of 2025, UGREEN hosts drivers on their Google Drive or static servers. Here is the process:
| 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. |
Troubleshooting: If it doesn’t appear in Device Manager after 2 minutes, move to Option 2.
Product Name: UGREEN Bluetooth 5.0 USB Adapter Model Number: CM390 Primary Chipset: Realtek RTL8761B Interface: USB 2.0 / USB-A Bluetooth Version: 5.0
| Aspect | Detail | |--------|--------| | Model | UGREEN CM390 | | Chipset | Realtek RTL8761B | | Driver needed for Win 10/11 | No (built-in) | | Driver needed for Win 7/8.1 | Yes (get from UGREEN or Realtek) | | Common issue | Adapter shows as "Unknown USB Device" → re-plug or try different USB port |
If you need a generic instructional document on how to install Bluetooth drivers for any USB adapter, let me know, and I can write that for you. But for the specific CM390 driver, the above is the accurate solution.
For the UGREEN CM390 (model 80889) Bluetooth 5.0 USB Adapter, the driver installation process depends on your operating system. Most modern versions of Windows handle this automatically, but older systems require a manual download. Driver Installation Methods
Automatic Detection: Windows 10 and Windows 11 typically recognize the UGREEN CM390 automatically upon plugging it in, installing the necessary drivers within seconds.
Official Website: If the adapter is not recognized, you can find the driver by searching for model number 80889 on the UGREEN Download Center.
Hardware Chipset: The device is based on the Realtek RTL8761BUV chipset. Installation Steps Plug in the Adapter: Insert the USB into a free port.
Check Device Manager: Look for a Bluetooth icon in the lower-right tray. If a "Found New Hardware" wizard appears, select "Install software automatically".
Disable Internal Bluetooth: If your computer has built-in Bluetooth, you must disable it in the Device Manager before installing the UGREEN adapter to avoid conflicts.
Manual Install: If using the downloaded driver, run setup.exe and restart your computer when prompted. Technical Specifications Chipset: Realtek RTL8761BUV. ugreen bluetooth 5.0 usb adapter cm390 driver
Range: Up to 20–30 meters (approx. 65–100 feet) depending on obstructions.
Capacity: Supports up to 5 devices simultaneously (e.g., headphones, mouse, keyboard, and printer).
Compatibility: Windows 7, 8.1, 10, and 11. Note: Apple devices are generally not supported for this specific model. UGREEN Bluetooth 5.0 USB Adapter CM390 User Manual
Installation * Step 1: Connect the Adapter. Plug the UGREEN Bluetooth 5.0 USB Adapter into an available USB port on your computer.
Overview
The Ugreen Bluetooth 5.0 USB Adapter CM390 is a compact, plug-and-play device that allows users to add Bluetooth 5.0 capabilities to their computers or laptops. The adapter uses the RTL8761BU chipset, which supports Bluetooth 5.0 and is backward compatible with Bluetooth 4.2, 4.1, and 4.0.
Key Features
Driver Overview
The Ugreen Bluetooth 5.0 USB Adapter CM390 driver is a software component that enables the operating system to communicate with the adapter. The driver is responsible for managing the adapter's functionality, including:
Driver Features and Performance
Operating System Compatibility
The Ugreen Bluetooth 5.0 USB Adapter CM390 driver is compatible with a range of operating systems, including: As of 2025, UGREEN hosts drivers on their
Common Issues and Troubleshooting
Some common issues that users may experience with the Ugreen Bluetooth 5.0 USB Adapter CM390 driver include:
To troubleshoot these issues, users can try:
Conclusion
The Ugreen Bluetooth 5.0 USB Adapter CM390 driver is a reliable and feature-rich software component that enables users to add Bluetooth 5.0 capabilities to their computers or laptops. The driver provides a stable connection to Bluetooth devices, supports fast data transfer speeds, and is compatible with a range of operating systems. While some users may experience issues with the driver, these issues can often be resolved through troubleshooting steps. Overall, the Ugreen Bluetooth 5.0 USB Adapter CM390 driver is a good option for users looking to add Bluetooth 5.0 capabilities to their devices.
Rating: 4.5/5
Recommendation: The Ugreen Bluetooth 5.0 USB Adapter CM390 driver is recommended for users who need to add Bluetooth 5.0 capabilities to their computers or laptops. It is particularly suitable for users who want a compact, plug-and-play adapter with a stable connection and fast data transfer speeds.
The UGREEN Bluetooth 5.0 USB Adapter (Model CM390 / 80889) Go to product viewer dialog for this item.
is an ultra-compact dongle designed to add high-speed wireless connectivity to Windows-based PCs. It utilizes the Realtek RTL8761BUV chipset to support Bluetooth 5.0 with Enhanced Data Rate (EDR) and Low Energy (BLE) modes. Driver Installation Guide
While modern systems often recognize the adapter automatically, manual installation is frequently required for full functionality on older Windows versions. UGREEN Bluetooth Adapter 5.0V 20 Meter Range – CM390
UGREEN Bluetooth Adapter 5.0V 20 Meter Range – CM390 – 80889 – 1 Year Warranty * Bluetooth Version: 5.0+EDR (Enhanced Data Rate) * Ugreen Sri Lanka Question about Ugreen CM390 - Galaxus
To set up the UGREEN Bluetooth 5.0 USB Adapter (CM390) Go to product viewer dialog for this item. | Problem | Solution | |--------|----------| | Adapter
, follow these steps to install the driver and pair your devices. Note that this adapter is compatible with Windows 7, 8.1, and 10. 1. Driver Installation Go to product viewer dialog for this item. (official model number
) typically requires a manual driver installation to function correctly. Option A: Download from Official Site (Recommended) Visit the UGREEN Download Center Search for the product model number . Download the driver package and unzip the folder. Run the setup.exe file and follow the on-screen prompts. Option B: Use the Provided CD Insert the driver CD into your computer's disc drive. Open the folder and double-click setup.exe.
Follow the installation wizard and click Finish to restart your computer. 2. Important Troubleshooting Tip
If your computer has built-in Bluetooth, you must disable it before installing the UGREEN adapter to avoid hardware conflicts: Unplug the UGREEN adapter Open Device Manager (Right-click Start > Device Manager).
Find your internal Bluetooth radio, right-click it, and select Disable device. UGREEN adapter back in and proceed with the installation. 3. Pairing a Device
Once the driver is installed, you should see a Bluetooth icon in your system tray.
Enable Bluetooth on your target device (phone, headset, etc.) and set it to pairing mode.
On your PC, double-click the Bluetooth icon in the status bar. Click Add a device and select your device from the list.
Confirm any pairing codes on both devices to complete the connection.
Are you having trouble with the driver specifically, or is the adapter not showing up in your Device Manager? UGREEN CM390 Bluetooth 5.0 USB Adapter User Manual
Solution: Update the driver. Older generic drivers have high latency. The official Realtek driver reduces HID polling latency. Also, ensure line-of-sight—the CM390 is small, so plugging it into the back of a metal desktop tower kills the signal. Use a front port or an extension cable.
If UGREEN’s link is broken, use the generic Realtek driver:
Yes, it works. The Pi OS includes the Realtek driver. Plug and play.
