Bottom
Component
Description
(1)
Battery and access cover release
latches
Release the battery from the battery bay, and
release the access cover from the computer.
(2)
Battery bay
Holds the battery.
(3)
SIM slot
Contains a wireless subscriber identity module (SIM)
(select models only). The SIM slot is located inside
the battery bay.
(4)
Vents (2)
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.
(5)
Access door
Contains the hard drive, the wireless LAN module
slot, and the memory module slot.
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.
16
Chapter 2 External component identification
