Bottom
NOTE:
Your computer may look slightly different from the illustration in this section.
Item
(1)
(2)
(3)
(4)
(5)
18
Chapter 2 External component identification
Component
Vents (2)
Service cover
Battery lock latch
SIM slot
Battery bay
Description
Enables 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.
Provides access to the hard drive bay, the WLAN module
slot, the WWAN module slot, and the memory
module slots.
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 support through
Help and Support.
Releases the battery from the computer.
Supports a wireless subscriber identity module (SIM)
(select models only). The SIM slot is located inside the
battery bay.
Holds the battery.