Dell bpcwcsn_5 - OptiPlex - 740 User Manual page 62

Connecting Drive Cables
When you install a drive, you connect two cables—a DC power cable and a data cable—to the back of
the drive and to the system board.
Drive Interface Connectors
1 interface cable connector
Interface connectors are keyed for correct insertion.
Power Cable Connectors
1 power cable
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Mini Tower Computer
Serial ATA Connector
1
2
2 interface connector
Serial ATA Power Connector
1
2
2 power input connector