The problem is when I connect the device, Windows doesn't see anything, it doesn't appear as an unidentified device or anything. Device manager shows nothing. (After running start_usb_serial).
I also tried to install this driver as a legacy driver when I was trying to make it work yesterday but no luck. I find the .inf file and install it but each time it would show an error. I'm leaning towards drivers being the issue but I'm not sure why it doesn't recognise the device in the first place, even as an unknown device.