Bottom - HP Pavilion dv4 Maintenance And Service Manual

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16 Chapter 2 External component identification
Component
SIM slot (select models only)
Battery bay
Vents (5)
Battery release latch
Memory module/wireless module
compartment
Hard drive bay
Description
Supports a wireless subscriber identity module (SIM). The
SIM slot is located inside the battery bay.
Holds the battery.
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.
Releases the battery from the battery bay.
Contains the memory module slots, the WLAN and
WWAN devices, and the keyboard access screw.
CAUTION: 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.
Holds the hard drive and the optical drive access screw.