Hi,
You have two choices for the internal ZIP.
IDE or the much rarer SCSI version.
ZIP 100 was available in both, haven't seen the 250 as an internal SCSI unit - although you can get them for the MAC so they must exist.
The ZIP drive is NOT a replacement for your floppy drive, so it doesn't use that connection.
External USB models are fast.
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PIII 650 Coppermine, ABit BE6-II, 384MB PC100 RAM (Samsung), Matrox G400MAX, SB Live! Value, Intel 10/100 NIC, Adaptec 2940UW, IBM 7200 ATA66 22GB HD, IBM 7200 ATA66 20GB HD, Pioneer 32x/6x SCSI DVD, Yamaha 4416 SCSI CD-RW, Iomega Zip 100 SCSI Internal, Iiyama Vision Master Pro 410.
Windows 2000 Only