You can try just installing the software without the driver and it may or may not work. It's basically the driver for the USB to serial cable. Some cheap cables have counterfeit version of the USB to serial CH341 chip built into the cable and require a prolific driver to work. If it is a genuine USB to serial chip built into the cable Windows will autodetect the cable and install the drivers automatically. If it's not a genuine chip or a "cloned chip", Windows will show it as a unknown device. You can try plugging in the cable, bring up Windows device manager and check to see if the drivers installed properly by expanding the "Ports (COM & LPT)" and see if you have any new COM ports listed when you plug in the cable. If device manager detects it as a "prolific chip" with a triangle (triangle means no or bad drivers - Windows see's it as a counterfeit chip) next to it or "unknown device", then you need to figure a way to get the drivers installed. My guess is if they list the driver for download - it's probably a counterfeit/cloned chip and needs it to work but you might get lucky.