HP Pavilion Slimline s5220f Supplementary Manual page 54

7 Insert the three tabs on the front panel into the slots on
the computer.
8 Swing the front panel toward the computer, and press
it into place.
9 Lay the computer on its side.
8
10 Insert the bottom of the side panel into the slots in the
computer rail, and then swing the panel down onto
the computer.
11 Slide the panel toward the front of the computer until
there is no gap.
12 Set the computer upright.
— Removing and Replacing Memory
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