Dell Latitude E6520 (Early 2011) - Manual (Page 21)

Subscriber Identity Module (SIM)
Card
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Removing The Subscriber Identity Module (SIM) Card
1. Follow the procedures in Before Working On Your Computer .
2. Remove the battery .
3. Press in on the SIM card to release it from the computer.
4. Grasp the SIM card and pull out to release from the computer.
Installing The Subscriber Identity Module (SIM) Card
1. Slide the SIM card into its compartment.
2. Replace the battery .
3. Follow the procedures in After Working Inside Your Computer .
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