Dell Precision Workstation 450 User Manual page 56

1 hard-drive cable
2 power cable
Serial ATA Drive
1 power cable
2 serial ATA hard-drive cable
7. Check all connectors to be certain that they are properly cabled and firmly seated.
8. Close the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
9. Connect your computer and devices to electrical outlets, and turn them on.
See the documentation that came with the drive for instructions on installing any software required for drive operation.
10. If the drive you just installed is the primary drive, insert a bootable floppy disk into drive A.