is an ultra-compact dongle designed to add high-speed wireless connectivity to Windows-based PCs. It utilizes the to support Bluetooth 5.0 with Enhanced Data Rate (EDR) and Low Energy (BLE) modes. Driver Installation Guide
: Unlike newer operating systems, Windows 7 requires a driver to be installed manually from the UGREEN website. ugreen bluetooth 5.0 usb adapter cm390 driver
Apple’s strict hardware certification means that (real Macs) without third-party kexts (kernel extensions). On Hackintosh or Boot Camp for Windows , use the Windows drivers. For macOS, you need the BlueToolFixup and BrcmPatchRAM kexts from OpenCore Legacy Patcher—but UGREEN CM390 is notoriously finicky on Mac. We recommend a Broadcom-based dongle for macOS instead. is an ultra-compact dongle designed to add high-speed
No. The driver remains installed. Just plug it back in. However, on Windows, pairing information is stored per adapter – if you use the dongle on a different USB port, you may need to re-pair devices. We recommend a Broadcom-based dongle for macOS instead
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.
Follow the on-screen prompts provided by the Realtek installation wizard.