Dell Latitude E6520 (Early 2011) - Manual (Page 39)

Modem Connector
14
Removing The Modem Connector
1. Follow the procedures in Before Working On Your Computer .
2. Remove the battery .
3. Remove the secure digital (SD) Card .
4. Remove the base cover .
5. Remove the modem card .
6. Disconnect the antenna cables.
7. Unthread the antenna cables from the route.
8. Unthread the modem cable.
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