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External component identification
Maintenance and Service Guide 2–9
Bottom components
Item Component Description
(1) Battery bay Holds the battery.
(2) Battery release latch Releases the battery from the battery bay.
(3) Vents (5) Enable airflow to cool internal components.
✎
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.
(4) Wireless module compartment Holds a wireless LAN module.
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To prevent an unresponsive system, replace the wireless module only
with a wireless module authorized for use in the computer by the
governmental agency that regulates wireless devices in your country or
region. If you replace the module and then receive a warning message,
remove the module to restore computer functionality, and then contact
technical support through Help and Support.
(5) Hard drive bay Holds the hard drive, RTC battery, and modem, and contains the memory
module slots.