: In versions like Red Hat 7.8, the serial ports may not work due to an incorrect baud_base parameter. A temporary fix is to use the setserial command to set the baud base to 921600 . 2. Singxer SU-2 Go to product viewer dialog for this item. (USB Digital Interface) The Singxer SU-2
Close serial monitors, terminal software (like PuTTY), or restart the PC. Mismatched baud rate or parity settings.
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Serial\Parameters
: If the device is marked with an error, right-click it in Device Manager and select "Update driver." For older Prolific adapters on Windows 11, you may specifically need to uninstall and rollback to an older driver version to bypass "non-genuine" hardware blocks .