English Manual
5.3.4 When Windows® finished installing the software, click “Finish”.
5.3.5 After install the driver, you have to check the “Control Panel”-“System”-
“Device Manager” to make sure the driver has already installed, you can
see a USB to Serial Port (COM3) under the Ports (COM & LPT) and a
Prolific USB-to-serial Com Port under the Universal Serial Bus
Controller.