External component identification

Bottom components

Item Component

Description

 

 

Hard drive bay

Holds the hard drive, memory module slots, WLAN module (select models

 

only), and WWAN module (select models only).

 

 

Vents (4)

Enable airflow to cool internal components.

 

✎ 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.

 

 

Speaker

Produces sound.

 

 

Battery bay

Holds the battery and subscriber identity module (SIM).

 

 

Charge level indicator

Displays the approximate remaining battery charge.

 

 

Accessory battery connector door

Slides open to expose the accessory battery connector.

 

 

Accessory battery connector

Connects an optional accessory battery.

 

 

Battery release latch

Releases the battery from the battery bay.

 

 

Docking connector

Connects an optional docking device.

 

 

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Maintenance and Service Guide