Xerox 820-II Drive Controller Card

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This expansion card shipped inside the Xerox 820-II as standard. It provided support for external data storage drives, which can be dual 5 1/4-inch floppy drives, dual 8-inch floppy drives, or the 20Kg 8-inch floppy and rigid drive combination unit. Drives were supported in several combinations and could be daisy-chained with the secondary connection on the drive unit rear. The default drive assignments were A-D for floppy drives and E-H for hard-disc partitions.

Date : Unknown

Manufacturer : Xerox

Physical Description : Expansion card x2 drive cables

This exhibit has a reference ID of CH36136. Please quote this reference ID in any communication with the Centre for Computing History.