Dell Latitude E5420M (Early 2011) - Manual (Page 36)

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Installing the Wireless Local Area Network (WLAN) Card
Installing The Wireless Local Area Network (WLAN) Card
1. Slide the WLAN card into its slot.
2. Tighten the screw to secure the WLAN card to the computer.
3. Connect the antenna cables according to the color code on the WLAN card.
4. Replace the back panel.
5. Replace the battery.
6. Follow the procedures in After Working Inside Your Computer .
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Removing the Wireless Local Area Network (WLAN) Card
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