HP DX2200 - Manual (Page 15)

Hardware Reference Guide www.hp.com 1-11
Hardware Upgrades
5. If you are installing an expansion card for the first time, you must
use a flatblade screwdriver to pry out the metal shield on the rear
panel that covers the expansion slot. Be sure to remove the
appropriate shield for the expansion card you are installing.
6. Hold the expansion card just above the expansion slot on the
system board then move the card toward the rear of the chassis so
that the bottom of the bracket on the card slides into the small slot
on the chassis. Gently press the card straight down into the
expansion slot on the system board.
Adding an Expansion Card
Removable Shield Expansion Card Type
Top shield PCI Express x16
Second shield PCI Express x1
Third shield PCI
Bottom shield PCI