Dell Latitude E6520 (Early 2011) - Manual (Page 37)

Modem Card
13
Removing The Modem Card
1. Follow the procedures in Before Working On Your Computer .
2. Remove the battery .
3. Remove the base cover .
4. Disconnect the connector that secures the modem card to the system
board.
5. Remove the screw securing the modem to the system.
6. Lift and remove the modem card from the computer.
37