Столкнулся с проблеммой такой вот.
Mac OS X 10.3
Mac OS X 10.3 does not support the scanners with SCSI ports:
Arcus, Arcus+, Arcus II, Arcus 1200, DuoScan, DuoScan HiD, DuoScan T1200, DuoScan T2000 XL, DuoScan T2500, Horizon, Horizon Ultra, StudioScan, StudioScan II, StudioScan IIsi...