Ugreen Bluetooth 50 Usb Adapter Cm390 Driver Install May 2026

The UGREEN CM390 is a tiny, low-profile USB Bluetooth adapter. Key specs:

Users love this dongle because it plugs flush into a laptop or desktop, but the installation process can be finicky.


Here is the secret UGREEN doesn't print on the box: The CM390 uses a Realtek chipset (usually the RTL8761B). You do not need "UGREEN software" – you need the Realtek Bluetooth driver.

Step-by-step manual install:

  • Reboot. Restart your PC.
  • Title: UGREEN Bluetooth 5.0 USB Adapter (CM390) Driver Installation Guide

    The UGREEN CM390 is a popular Bluetooth 5.0 USB adapter known for its plug-and-play nature. However, depending on your version of Windows (specifically Windows 10 vs. Windows 11) and your specific hardware revision, you may need to manually install drivers to get it working correctly.

    Here is the step-by-step installation process. ugreen bluetooth 50 usb adapter cm390 driver install

    Struggling to get your new UGREEN Bluetooth dongle to work? You are not alone.

    The UGREEN Bluetooth 5.0 USB Adapter (Model CM390) is one of the most popular dongles on the market because it’s cheap, tiny, and generally reliable. However, there is a massive point of confusion for new users: The driver installation.

    If you just plugged it in and nothing happened (or you see "Unknown USB Device"), this guide is for you. The UGREEN CM390 is a tiny, low-profile USB

    Struggling to get your UGREEN CM390 Bluetooth adapter working? You are not alone.

    The UGREEN Bluetooth 5.0 USB Adapter (Model: CM390) is one of the most popular dongles on the market. It promises instant wireless connectivity for mice, keyboards, headphones, and game controllers. However, the phrase "ugreen bluetooth 50 usb adapter cm390 driver install" is searched thousands of times per month. Why? Because despite being "plug-and-play" in theory, Windows often fails to automatically load the correct driver.

    In this 2,500+ word guide, we will walk you through every possible method to install the CM390 driver, troubleshoot common errors, and optimize your Bluetooth 5.0 performance. Users love this dongle because it plugs flush


    With the correct driver installed, the CM390 demonstrates the capabilities inherent to the Bluetooth 5.0 standard:

    If you are on Windows 7 or Windows 8, you may see a red error.