For sale is a Ratoc REX-PCI30L Low-Profile UltraSCSI PCI Board for PCI-based Mac & PC computers. Features Half Pitch Pin Type 50 Pin and allows for UltraSCSI transfer rates up to 20MB/sec. On the Mac side, it is said to be compatible with Mac OS 8.6+, as well as 10.0.4 or later.
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