Dell OptiPlex 7020 (Mid 2014) - Manual (Page 13)

4. Pull the release lever away from the expansion card until you release the securing tab from the dent
in the card. Then, ease the card up and out of its connector and remove it from the computer.
Installing The Expansion Card
1. Insert the expansion card into the connector on the system board and press down to secure it in
place.
2. Install the cover
3. Follow the procedures in After Working Inside Your Computer.
Removing the Wireless Local Area Network (WLAN) Card
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the cover.
3. Remove the screws that secure the antenna puck to the computer.
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