HP ProDesk 600 Maintenance And Service Manual page 107

8.
If you are not installing a new expansion card, install an expansion slot cover to close the open
slot.
CAUTION:
After removing an expansion card, you must replace it with a new card or
expansion slot cover for proper cooling of internal components during operation.
9.
To install a new expansion card, hold the card just above the expansion socket on the system
board then move the card toward the rear of the chassis (1) so that the bracket on the card is
aligned with the open slot on the rear of the chassis. Press the card straight down into the
expansion socket on the system board (2).
NOTE:
When installing an expansion card, press firmly on the card so that the whole connector
seats properly in the expansion card slot.
10.
Rotate the slot cover retention latch back in place to secure the expansion card.
Expansion card
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