Dell DSS 2500 Owner's Manual page 94

For instructions, see the documentation accompanying the card.
2 Open the expansion card retention latch.
3 If you are installing a new card, remove the filler bracket.
NOTE: Store the filler bracket for future use. Filler brackets must be installed in empty expansion card slots to maintain FCC
certification of the system. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow
inside the system.
4 Holding the card by its edges, position the card so that the card's edge connector aligns with the expansion card connector.
5 Insert the card's edge connector firmly into the expansion card connector until the card is fully seated.
6 Close the expansion card retention latch by pushing the latch down until the latch snaps into place.
7 Connect the required cables to the expansion card.
Figure 38. Installing an expansion card onto the system board
1 expansion card retention latch lock
3 expansion card
Next step
Follow the procedure listed in the After working inside your system section.
Related links
Safety instructions
Before working inside your system
Removing an expansion card from the system board
After working inside your system
94 Installing and removing system components
2 expansion card retention latch
4 expansion card connector