Dell Precision 490 - Manual (Page 55)

9. Slide the hard drive into the hard-drive bay until it clicks securely into place.
10. Connect a power cable to the hard drive.
11. If you are installing a SATA hard drive, connect the data cable to the hard drive.
If you are installing a SAS hard drive, connect the data cable on the SAS controller card to the hard drive.
1 drive
2 hard-drive bracket
NOTICE: SAS drives and SATA drives cannot be mixed in the rotatable hard-drive carrier. The drives in the hard-drive carrier must both be either SATA or
SAS hard drives.
NOTICE: The only SATA connectors on the board that support hard drives are those labeled SATA0, SATA1, and SATA2.
1 P3 power connector 3 hard-drive power cable
2 SATA data cable 4 hard-drive