Dell POWEREDGE E11S Owner's Manual page 70

6 Grasp the expansion card by its edges, and carefully remove it from the
expansion-card connector.
7 If you are removing the card permanently, install a metal filler bracket over
the empty expansion slot opening and close the expansion-card latch.
NOTE:
maintain Federal Communications Commission (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.
8 Replace the expansion card stabilizer. See "Installing the Expansion-Card
Stabilizer" on page 65.
9 Close the system. See "Closing the System" on page 46.
10 Reconnect the system and peripherals to their power sources, and turn
them on.
11 Remove the card's device driver from the operating system.
70
Installing System Components
Filler brackets must be installed over empty expansion card slots to