Dell Vostro 3555 (Mid 2011) - Manual (Page 34)

6. Remove the WWAN card from the computer.
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 in place.
3. Connect the antennae according to the color code on the WWAN card.
4. Install the
access panel .
5. Install the battery .
6. Follow the procedures in After Working Inside Your Computer .
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