Dell Latitude E5520M (Early 2011) - Manual (Page 36)

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Installing the Wireless Wide Area Network (WWAN) card
Installing The Wireless Wide Area Network (WWAN) Card
1. Slide the WWAN card into its slot.
2. Tighten the screw to secure the WWAN card to the computer.
3. Connect the antenna cables according to the color code on the WWAN 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 Wide Area Network (WWAN) Card
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