Before buying any USB Bluetooth adapter, assume you will need to install a driver manually. Bookmark this guide, download the driver from Realtek’s site, and keep a copy on your cloud storage. This way, whether you are setting up a new PC or reviving an old one, your UGREEN CM390 will work perfectly within five minutes.
The Realtek RTL8761B chipset often requires that are not included in the kernel by default. You may need to manually download rtl8761b_fw and rtl8761b_config . We will cover this in Part 5.
: 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
Sometimes, the UGREEN CM390 might be genuinely faulty or incompatible with your specific device. Here are superior alternatives depending on your use case.
This article will serve as the ultimate resource. We will cover the chipset information, official and generic driver sources, step-by-step installation guides for Windows 10/11, tweaks for Linux (Ubuntu/Debian), Android compatibility, and a detailed troubleshooting section. Before buying any USB Bluetooth adapter, assume you
, a dedicated driver provides superior stability and access to full functionality. Realtek.
: If your PC lacks an optical disc drive, navigate directly to the UGREEN Download Center or the standard UGREEN US Downloads portal. Technical Sourcing Tip UGREEN CM390 Bluetooth 5.0 USB Adapter User Manual The Realtek RTL8761B chipset often requires that are
Before purchasing, it is important to know the UGREEN CM390's compatibility with other operating systems.