HP Pavilion 15 Maintenance And Service Manual page 25

Component
(4) Vents (6)
(5) Service door
Description
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.
Provides access to the wireless LAN (WLAN) module
slot and the memory module slots.
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 support
through Help and Support. From the Start screen, type
h, and then select Help and Support.
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