Ugreen Bluetooth 5.0 Usb Adapter Cm390 Driver Fixed Jun 2026

A guide on how to (headsets, controllers) Troubleshooting steps for specific Windows error codes Alternatives if this adapter doesn't meet your needs Let me know how I can further assist you! Share public link

file from your download or CD. Follow the on-screen prompts and click

| Aspect | Detail | |--------|--------| | | 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 |

Address these common errors if your adapter fails to connect. Error: "Device Cannot Start (Code 10)" ugreen bluetooth 5.0 usb adapter cm390 driver

The Ugreen Bluetooth 5.0 USB adapter CM390 is a device that enables users to add Bluetooth functionality to their computers or laptops that lack built-in Bluetooth capabilities. This adapter is particularly useful for those who want to connect their Bluetooth devices, such as headphones, speakers, or smartphones, to their computers without the hassle of cables.

| Feature | UGREEN CM390 | ASUS BT500 | TP-Link UB500 | | :--- | :--- | :--- | :--- | | | Realtek RTL8761B | Realtek RTL8761B | Realtek RTL8761B | | Driver Difficulty | Easy (Official UGREEN site) | Moderate (ASUS Armoury Crate required) | Tricky (TP-Link site often down) | | Windows 11 Native | Yes, but update driver | Yes | Yes | | Driver File Size | 80 MB | 120 MB | 95 MB | | Known Driver Bug | None after v3.0.1 | Random disconnect in sleep mode | Code 10 error on installation |

Disclaimer: Product specifications and driver links are accurate as of 2025. Always verify compatibility with your specific OS version. A guide on how to (headsets, controllers) Troubleshooting

If your computer already has built-in Bluetooth (which is not working properly) or you are upgrading from a different adapter, you must disable the existing Bluetooth driver to avoid conflicts: Right-click the Start button and select . Expand the Bluetooth section.

UGREEN CM390. It uses a standard Realtek driver without proprietary bloatware (unlike ASUS’s Armoury Crate or TP-Link’s diagnostic tools).

Even if Windows auto-installs a driver, you should manually install the official UGREEN/Realtek driver for stability. Error: "Device Cannot Start (Code 10)" The Ugreen

The (often listed under SKU 80889 ) is a compact, high-performance USB dongle designed to bring wireless connectivity to desktop computers and older laptops. Key Technical Specifications Bluetooth Version : Bluetooth 5.0 + EDR (Enhanced Data Rate) Effective Range : Up to 30 meters (98 feet) in open spaces

In an era where desktop PCs and older laptops still lack native Bluetooth connectivity, the USB Bluetooth dongle remains one of the most cost-effective upgrades you can buy. Among the crowded market of adapters, the has carved out a reputation for reliability, range, and driver stability.

Select the correct driver for your version of Windows and download the compressed (ZIP) folder to your desktop.

to load the new Realtek Bluetooth stack.