Hi,
to call a UC100 a plain USB to parallel converter does the UC100 a grave injustice.
Inside the UC100 is an FPGA and it is a genuine, if IO limited, external motion controller and is way WAY WAY
more clever than a USB to parallel converter.
The only caution is that there are a ton of Chinese made UC100 look-a-likes on EBay and Amazon.
If you are going to buy, buy direct from CNCDrive or their nominated distributor. You don't want Chinese
rubbish, they aren't a patch on the genuine article.
Craig