Adding and Replacing Parts 227General Drive Installation GuidelinesWhen you install a drive, you connect two cables—a DC power cable fromthe power supply and a data cable—to the back of the drive. The other end ofthe data cable will connect to either an expansion card or to the system board.Most connectors are keyed for correct insertion.General Drive Installation GuidelinesNOTICE: If metal shields are present in your computer configuration, they must beinstalled at all times while your computer is in use or your computer may notfunction properly.When you install a drive, you connect two cables—a DC power cable fromthe power supply and a data cable—to the back of the drive. The other end ofthe data cable will connect to either an expansion card or to the system board.Most connectors are keyed for correct insertion; that is, a notch or a missingpin on one connector matches a tab or a filled-in hole on the other connector.Power Cable ConnectorsWhen connecting a SAS or SATA cable, hold the cable by the connector ateach end and press firmly into the connector. When disconnecting a SAS orSATA cable, hold the cable by the connector at each end and pull until theconnector detaches.1 power cable 2 power input connector12