There is a slight problem with these adapters I have encountered. The USB to IDE chipset they are based on will not work with drives under about 1GB for some reason. They don't seem to support non-translated drives that rely on cylinder-head-sector style addressing. My solution is to find a 2.5 to 3.5" IDE plug adapter and a machine with a real parallel IDE port. I wouldn't trust a PATA to SATA adapter with this either. Laplink via serial is another option (NT based Windows don't work with the parallel cable), I have it on my Contura Aero 4/33c, mostly because it didn't come with the PCMCIA floppy drive. Ethernet cards can get messy if the machine is still running DOS, you have to mess with card and socket services, the old LAN Manager driver stack, plus have a PC Card that has DOS drivers.