HP Pavilion Slimline s5220f Supplementary Manual page 44

5 Insert the three tabs on the front panel into the slots on
the computer.
6 Swing the front panel toward the computer, and press
it into place.
7 Lay the computer on its side.
6
8 Insert the bottom of the side panel into the slots in the
computer rail, and then swing the panel down onto
the computer.
9 Slide the panel toward the front of the computer until
there is no gap.
10 Set the computer upright.
— Removing and Replacing the System Fan
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