Dell Precision R5400 (Mid 2008) - Manual (Page 40)

Removing a Host Card
1. Perform the steps in Before Working on Your Computer .
2. Remove the center expansion-card cage (see Removing an Expansion- Card Cage ).
3. Release the expansion card:
a. Open the expansion-card latch.
b. Grasp the expansion card by its top corners, and remove it from the expansion-card connector.
4. If you are removing the card permanently, install a metal filler bracket over the empty expansion-slot opening and close the expansion-card latch.
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NOTE: Remember to disconnect the two-wire cable from the system board.
NOTE: You must install a filler bracket over an empty expansion slot to maintain Federal Communications Commission (FCC) certification of the
computer. The brackets also keep dust and dirt out of the computer and aid in proper cooling and airflow inside the computer.