Bottom components
Item Component Function
(1)
Vents (6) Enable airflow to cool internal components.
CAUTION: To prevent overheating, do not
obstruct vents. Use the computer only on a hard, flat
surface. Do not allow another hard surface, such as
an adjoining optional printer, or a soft surface, such
as pillows or thick rugs or clothing, to block airflow.
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.
(2)
Battery lock latch Releases the battery from the battery bay.
(3)
Hard drive, SIM card, and WWAN bay Holds the hard drive, a SIM card (select models only), and
a WWAN module (select models only).
CAUTION: The WWAN module and WLAN
module are not interchangeable.
(4)
Optical drive release latch Releases the optical drive from the drive bay.
(5)
Memory module compartment Contains the memory module slots.
(6)
WLAN module compartment Holds a WLAN module (select models only).
CAUTION: The WWAN module and WLAN
module are not interchangeable.
12 Chapter 2 External component identification ENWW
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