Compaq 247320-003 - Deskpro 4000 - 5166 Model 2500/CDS Reference Manual page 66

6. Place the graphics controller on a grounded, flat surface
and install the appropriate upgrade memory module as
illustrated below.
7. Replace the graphics controller into the same slot.
8. Replace the screw into the expansion slot, if upgrading a
board that resides in the expansion board cage.