If the Setup.exe fails or freezes, perform a manual driver update:
The is a compact dongle designed to add high-speed wireless connectivity to Windows-based PCs. It uses the Realtek RTL8761BU chip to provide stable connections for up to 5 devices simultaneously, including headsets, mice, and keyboards. Driver Download & Installation ugreen bluetooth 5.0 usb adapter cm390 driver
: Visit the UGREEN Download Center and search for model 80889 . If the Setup
: The adapter uses the Broadcom BCM20702A0 chipset, known for reliable stability and native support in older Windows versions. If the Setup.exe fails or freezes
