External component identification
Maintenance and Service Guide 2–9
Bottom components
Item Component Function
1
Battery bay Holds the battery.
2
Battery release latch Releases the battery from the battery bay.
3
Vents (9) Enables 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
Secondary hard drive bay Holds an optional secondary hard drive.
5
Integrated subwoofer Contains the subwoofer speaker.
6
Primary hard drive bay Holds the primary hard drive, the memory module slots, and the WLAN
module (select models only).
Ä
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.
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