HP ProDesk 405 G1 Microtower Maintenance And Service Manual page 46

7.
If you are not installing a new expansion card, install an expansion slot cover to close the open
slot.
CAUTION:
expansion slot cover for proper cooling of internal components during operation.
8.
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 bottom of the bracket on
the card slides into the small slot on the chassis. Press the card straight down into the expansion
socket on the system board (2).
NOTE:
seats properly in the expansion card slot.
36 Chapter 5 Removal and replacement procedures: Microtower
After removing an expansion card, you must replace it with a new card or
When installing an expansion card, press firmly on the card so that the whole connector