HP Pavilion Slimline s5220f Supplementary Manual page 26

3 Replace the four screws (two on each side) that secure
the hard disk drive in the cage.
4 Connect the cables to the drive.
5 Tip the drive cage and insert it into the computer.
10
6 Align the drive cage with the opening in the front of
— Removing and Replacing the Hard Disk Drive
537496-001
the computer, slide the drive cage up to engage the
two tabs, circled below, and...
...ensure the screw hole at the top of the drive cage
aligns under the screw hole in the computer rai1 (1).
NOTE: Do not position the cage screw hole over the
computer rail (2).