Bottom components

Component

Description

 

 

 

(1)

Battery bay

Holds the battery.

 

 

 

(2)

Battery release latch

Releases the battery from the battery bay.

 

 

 

(3)

SIM slot (select models only)

Contains a wireless subscriber identity module (SIM). The SIM slot

 

 

is located inside the battery bay.

 

 

 

(4)

Docking connector

Connects an optional docking device.

 

 

 

(5)

Accessory battery connector

Connects an optional accessory battery.

 

 

 

(6)

Vents (7)

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.

 

 

 

(7)

WWAN/WLAN module compartment

Contains a WWAN module and a WLAN module (select models

 

 

only).

 

 

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.

 

 

 

Identifying hardware

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