HP Pavilion Slimline s5220f Supplementary Manual page 33

3 Disconnect all peripherals and cables, including the
power cord.
4 With a screwdriver, loosen the side panel thumbscrew
on the back of the computer.
— Removing and Replacing an Add-in Card
537497-001
5 Slide the side cover toward the back of the computer,
lift it off, and set it aside.
6 Lay the computer on its side.
7 Locate the add-in card you want to replace, and the
bracket on the back of the computer that secures the
add-in cards.
3