On 15 Jul 98 at 23:32, Nicolas Cure wrote: > I am planning to build a new computer and I have trouble figuring out > which type of SCSI card to buy. Can someone please explain the > difference between wide SCSI, fast SCSI, ultra SCSI, etc. Fast SCSI is capable of 10 MB/s; Ultra SCSI doubles the pulse rate to be able to handle 20 MB/s. Wide SCSI moves 16 bits at a time instead of 8, so it can handle 20 MB/s, and Ultra Wide can handle up to 40 MB/s. Note that most hard drives can pump less than 20 MB/s, and devices like zip drives and scanners are slower than that. > I have a scanner and I plan to buy a hard drive and a zip drive > and I whant to put them on the same card but I don't know which > card I need. My preferred card for your situation is the Diamond FirePort 40. It provides a Fast SCSI connector for external devices, and your choice of wide or narrow internal connections for your hard drive. David G