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Drive Interface Connectors
Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one
connector matches a tab or a filled-in hole on the other connector. Keyed connectors ensure that the
pin-1 wire in the cable (indicated by the colored stripe along one edge of the IDE cable—serial ATA
cables do not use a colored stripe) goes to the pin-1 end of the connector. The pin-1 end of a connector
on a board or a card is usually indicated by a silk-screened “1” printed directly on the board or card.
NOTICE: When you connect an IDE interface cable, do not place the colored stripe away from pin 1 of
the connector. Reversing the cable prevents the drive from operating and could damage the controller,
the drive, or both.
IDE Drive Connector Serial ATA Connector
1 colored stripe on IDE cable
2 interface cable connector
3 interface connector
1
2
3
2
3
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