HP Compaq Presario CQ56-110US Notebook PC - Manual (Page 20)

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Component Description
(1) Battery bay Holds the battery.
(2) 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.
(3) Battery release latch Releases the battery from the battery bay.
(4) Memory module compartment Contains the two memory module slots.
(5) Hard drive bay Holds the hard drive.
12 Chapter 2 Getting to know your computer