Dell Latitude E6520 (Early 2011) - Manual (Page 41)

Installing The Modem Connector
1. Align the modem connector to its original position.
2. Align the modem bracket to its original position.
3. Tighten the screw to secure the modem bracket.
4. Route and connect the modem cable.
5. Route and connect the antenna cables.
6. Install the
modem card .
7. Install the base cover .
8. Install the secure digital (SD) Card .
9. Install the battery .
10. Follow the procedures in After Working Inside Your Computer .
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