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Bottom components
Component Description
(1) Battery release latches (2) Release the battery from the battery bay.
(2) Battery bay Holds the battery.
(3) SIM slot (select models only) Contains a wireless subscriber identity module (SIM). The SIM
slot is located inside the battery bay.
(4) Broadband wireless module compartment Contains an HP Mobile Broadband Module (select models only).
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.
(5) Vents (5) 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.
(6) Hard drive bay Holds the hard drive.
NOTE: The 4.57-cm (1.80-inch) primary hard drive must be
installed in the hard drive bay. Installation of this drive in the
optical drive bay is not supported.
(7) Bluetooth compartment Contains a Bluetooth device.
16 Chapter 2 External component identification