: These systems typically recognize the adapter automatically as soon as it is plugged into a USB port.
You tried to install a 32-bit driver on 64-bit Windows, or the INF file is for a different PID. Solution: 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. use the Windows drivers. For macOS
Confirm any pairing codes on both devices to complete the connection. ugreen bluetooth 5.0 usb adapter cm390 driver