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SIM
NOTE: This section applies only to computer models with WWAN capability.
NOTE: The SIM is provided by the end-user as a security measure for the WWAN module. The SIM
should be removed, placed into a static-dissipative container, and then replaced when the computer
is reassembled.
Before removing the SIM, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 31).
5. Remove the bottom door (see
Bottom door on page 33).
Remove the SIM:
1. Unlock the SIM holder (1).
2. Rotate the SIM holder upright (2).
3. Remove the SIM (3) from the SIM holder.
Reverse this procedure to install the SIM.
34 Chapter 4 Removal and replacement procedures