As Apple's official upgrades tended to command a premium, many third party manufactures offered add-on SCSI cards as well as RAM upgrades to achieve the same functionality.

As an example, one of our machines with a SCSI hard drive takes about three minutes to boot from cold, as the SCSI card gets its affairs in order.

MP to check if SCSI card fitted, and if not to discuss specifications for a new machine.

The 5380 was used in the Macintosh Plus and in numerous SCSI cards for personal computers, including the Amiga and Atari TT.

There have been some compatibility problems with early SCSI cards.

Some SCSI scanners are supplied together with a dedicated SCSI card for a PC, although any SCSI controller can be used.

Each needs to be connected to a 16-bit SCSI card (SCSI, pronounced like "scuzzy," stands for Small Computer System Interface), which Plextor will include for $50.

NEC offers an internal drive (Multispin 6Xi) for $499 and an external model (Multispin 6Xe) for $599; the necessary SCSI card costs an additional $125.

Until recently, color scanners typically required installing a SCSI card, a dreaded process that generally meant opening up the machine, poking around inside and attempting to master strange and mysterious software plumbing.

The leading SCSI card manufacturer, Adaptec, has manufactured over 100 varieties of SCSI cards over the years.