Dell OptiPlex GX260 - Manual (Page 133)

Connecting Drive Cables
When you install a drive, you connect two cables—a DC power cable and an interface cable—to the back of the drive.
Power Cable Connector
1 Power cable
2 Power input connector
Drive Interface Connector
1 Interface connector
2 Colored stripe on cable
3 Interface cable
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 cable) 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 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.
Hard Drive