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2–10 Maintenance and Service Guide
External component identification
Bottom components
Item Component Description
(1) Battery release latches (2) Release the battery from the battery bay.
(2) Battery bay Holds the battery.
(3) Vents (4) Enable airflow to cool internal components.
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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) Hard drive bay Contains the hard drive, the wireless LAN module slot, and the memory
module slot.
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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.