Ensure no other software is using the COM port. Close all lighting apps, reopen your primary software, and check the port assignment in software settings.
Getting the interface to work on Windows 10 is a common challenge because it is a "generic" device that often lacks signed, modern drivers. cyl6602 usbdmx512 driver windows 10 verified
Sometimes the automatic installer fails. If so, follow these manual steps to force Windows 10 to recognize the CYL6602: to a folder on your desktop. Open Device Manager . Ensure no other software is using the COM port