Dell OptiPlex 9020 (Mid 2013) - Manual (Page 13)

Installing the WLAN Card
1. Place the WLAN card on the connector and press down.
2. Press the latch to secure the WLAN card.
3. Place the antenna puck on the connector and tighten the screws that secure it to the computer.
4. Install the cover.
5. Follow the procedures in After Working Inside Your Computer .
Removing the Optical Drive
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover.
3. Disconnect the data and power cables from the back of the optical drive.
4. Lift the tab and slide the optical drive out to remove it from the computer.
5. Flex the optical-drive bracket and then lift the optical drive from the bracket
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