Using the SCSI card for other devices can be tricky. Sometimes SCSI IDs
must be set with a jumper on the card and the software must be reconfigured
to use another address for the card.
Similarly, the scanner will theoretically operate with other SCSI cards or
some built-in SCSI implementations, but different drivers will be required
-- and Apple will not support other SCSI cards. (Note that this rules out
all Microchannel-equipped IBM PS/2s as supported configurations.)