HP Compaq Presario CQ41-211TX Notebook PC - Manual (Page 21)

Bottom components
Component Description
(1) Hard drive bay Holds the hard drive 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.
(2) Memory module compartment Contains the 2 memory module slots.
(3) Mini Card compartment Holds the real-time clock (RTC) battery and, on select models, the
WLAN device.
(4) Battery release latch Releases the battery from the battery bay.
(5) Battery bay Holds the battery.
(6) Vents (3) 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.
Components 11