HP ENVY dv4-5213cl Notebook PC - Manual (Page 22)

Bottom
Component Description
(1) Battery bay Holds the battery.
(2) Battery release latch Releases the battery from the battery bay and opens the
service door.
(3) Integrated subwoofer Provides superior bass sound.
(4) 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.
12 Chapter 2 Getting to know your computer