It's amazing how little the Interent seems to know about those Shark drives, but unless it *says* it's a SCSI port on the back I would tread very carefully when it comes to just hooking it up to a Mac's SCSI chain. There are articles saying the external Shark was *definitely* sold in Parallel Port and PCMCIA versions, but practially no mention of an external SCSI model. (They sold an internal SCSI driver of a slightly different capacity, apparently, but it seems to be even rarer than the external ones.) What does the connector on the back look like, exactly? Is there a SCSI ID selector switch and an alternate way to power the drive other than through the keyboard taps on the parallel port connector box? If the answer to those two questions is "no" it's almost certainly not a "normal" SCSI drive.