Removing The Subscriber Identification Module Card; Base Cover; Removing The Base Cover - Dell Precision 3520 Owner's Manual

4. Push the SIM card tray into the slot until it clicks into place.

Removing the Subscriber Identification Module card

CAUTION: Removing the Subscriber Identification Module (SIM) card when the computer is on may cause data
loss or damage the card. Ensure your computer is turned off or the network connections are disabled.
1. Insert a paperclip or a SIM card removal tool into the pinhole on the SIM card tray.
2. Pull the SIM card tray to remove it.
3. Remove the SIM card from the SIM card tray.
4. Push the SIM card tray into the slot until it clicks into place.

Base cover

Removing the base cover

1. Follow the procedure in
2. To remove the base cover:
a. Loosen the M2.5x5 captive screws that secure the base cover to the [1].
b. Pry the base cover from the edge near the air vent [2].
Before working inside your computer.
Disassembly and reassembly 11