Dell Latitude E6420 (Early 2011) - Manual (Page 39)

Installing the Wireless Local Area Network (WLAN) Card
1. Insert the WLAN card into its connector at a 45–degree angle.
2. Replace and tighten the screw that secures the WLAN card to the
computer.
3. Connect the antenna cables to their respective connectors marked on the
WLAN card.
4. Install the ATG Port Cover (only for E6420 ATG systems).
5. Install the ATG Handle (only for E6420 ATG systems).
6. Install the base cover .
7. Install the Secure Digital (SD) card .
8. Install the battery
9. Follow the procedures in After Working Inside Your Computer .
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