I can probably come up with a full duplex parallel patch cable and the software to run it in full duplex but, alas, this is DOS stuff so it will clobber your long file names. I don't think Intrlnk/Intrsrvr or cable connection wizard use full duplex. They end up importing the data via the control inputs in a fairly inefficient manner. BTW I never tried this with DOS 7.1. It may actually work on LFNs.