I tried the iomega FireWire-SCSI bridge cable (iomega jaz jet) with a recent SCSI harddsik drive, and never got the computer notice the drive at all. No success using Tiger, Leopard or Win XP on different machines, with or without extra installed driver software. The dealer swapped the bridge cable with another old new stock part and I have got the same result. Might the original iomega drive case use some special wiring which makes the cable incompatible to other cases?