Dell Precision Workstation 450 User Manual page 109

Serial ATA Drive
6. If you are installing a drive that has its own controller card, install the controller card in an expansion slot.
See the documentation that accompanied the drive and controller card to verify that the configuration is correct for your computer.
NOTICE: Match the colored strip on the cable with pin 1 on the drive (pin 1 is marked as "1").
7. Connect the power and hard-drive cables to the drive.
IDE/SCSI Drive