Compaq CQ42 manual Bottom components

Bottom components

Component		Description
(1)	Battery bay	Holds the battery.
(2)	Battery release latch	Releases the battery from the battery bay.
(3)	Vents (4)	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.
(4)	Memory module compartment	Contains 2 memory module slots and, on select models,
		the wireless LAN (WLAN) device.
		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)	Hard drive bay	Holds the hard drive.

16 Chapter 2 External component identification