Introduction to Data Communications
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Hard-drives Interfaces

ST506 or ESDI - Enhanced Small Device Interface Hard-drives, 34 Pin Control and 20 Pin Data Card Edge Connector


IDE Integrated Drive Electronics and EIDE Enhanced IDE Hard-drives, 40 Pin DIP connector


SCSI Hard-drive - Small Computer System Interface, 50 Pin DIP connector or Hi density connector

SCSI - Small Computer System Interface, External 50 pin Connector


Introduction to Data Communications
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