Dell OptiPlex 740 - Manual (Page 51)

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Drives
Drives
Your computer supports:
l One SATA hard drive
l One optional floppy drive or media card reader or one second SATA hard drive
l One optional optical (CD or DVD) drive
General Installation Guidelines
Connect the SATA hard drive to the connector labeled "SATA0." Connect the SATA CD or DVD drives to the connector labeled "SATA1" on the system board.
Connect a second optional hard drive to the connector labeled "SATA2." See
System Board Components for information about system board connectors.
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
Interface connectors are keyed for correct insertion.
Power Cable Connectors
1 optical drive 2 floppy drive or media card reader or SATA hard drive 3 hard drive
Serial ATA Connector
1 interface cable connector 2 interface connector