I can't add much to this other than that I do have both a LS120 and a ZIP drive on my 4 way IDE adapter (plus HD and CD drives). I did have problems setting it up, and spent a lot of time talking to Eyetech at the time. Good luck setting it up, its well worth it (although the LS120 is around 5 times slower than the ZIP on my system !). Oh, and yes, both drives allow disk swapping :-)
