Ugreen Bluetooth 50 Usb Adapter Cm390 Driver Install Jun 2026

Temporarily disable third-party antivirus software or Windows Defender real-time protection during the installation process, as strict security algorithms occasionally block hardware driver modifications. Audio Stuttering or Range Issues

You can find it here: . This is the most reliable source, as it will always have the most up-to-date version of the driver. The file is approximately 145.4 MB and was last updated in August 2024, so a stable internet connection is needed.

By following this installation methodology, your Ugreen Bluetooth 5.0 CM390 USB adapter will deliver optimal audio fidelity, low latency, and a reliable wireless connection across all your compatible devices.

Before installing the driver, you must source the official software package directly from Ugreen to avoid malware or incompatible third-party files. ugreen bluetooth 50 usb adapter cm390 driver install

Follow these steps to get the official Realtek-based driver directly from UGREEN. Step 1: Download the Package

Here are the three ways to get the CM390 working, ranked from easiest to most thorough.

Once installed correctly, the CM390 is a rock-solid adapter. You will enjoy low-latency audio, simultaneous connections to multiple devices (keyboard + mouse + headphones), and the full 20-meter range of Bluetooth 5.0. The file is approximately 145

still includes a driver CD, which acts as a "life-saver" for computers without stable internet access.

Ensure you unzipped the folder completely. Running setup.exe straight from a zipped archive causes files to block. "Device Cannot Start (Code 10)"

Bluetooth signals operate on a 2.4GHz frequency, which is highly susceptible to interference. If your audio cuts out, move the dongle away from USB 3.0 external hard drives or Wi-Fi routers. Using a short USB extension cable to bring the adapter into a clear line of sight with your devices can dramatically improve range and stability. To ensure we get your hardware working perfectly, tell me: What are you currently running? Follow these steps to get the official Realtek-based

Here is the secret UGREEN doesn't print on the box: You do not need "UGREEN software" – you need the Realtek Bluetooth driver.

Re-open Device Manager, expand the Bluetooth section, right-click the Realtek adapter, and choose Uninstall device . Unplug the USB dongle, reboot your computer, plug it into a different USB port, and run the setup.exe installer again. Issue 2: Bluetooth Icon is Missing from the Taskbar

For Windows 10 and 11 users, the simplest way to install the correct driver is through the integrated Windows Update catalog.

Therefore, the first step is always the simplest: . If your PC immediately recognizes it and you can start pairing devices, you’re done. If it doesn’t, or if you’re on Windows 7, proceed with one of the manual methods below.

The UGREEN Bluetooth 5.0 USB Adapter (Model: CM390 / SKU: 80889) Go to product viewer dialog for this item.