Component Description
(2)
Service cover release latch Releases the service cover on the computer.
(3)
Service cover release lock Locks the service cover.
(4) Vents (3) Enable airflow to cool internal components.
NOTE: The computer fan starts up
automatically to cool internal components and
prevent overheating. It is normal for the
internal fan to cycle on and off during routine
operation.
(5)
SIM slot (select models only) Supports a wireless subscriber identity module
(SIM). The SIM slot is located inside the battery
bay.
Service tag
When ordering parts or requesting information, provide the computer serial number and model number
provided on the service tag. It is necessary to remove the battery to obtain these numbers. See
Battery
on page 53 for battery removal instructions.
18 Chapter 2 External component identification
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