External component identification 2–8
Left-side components
Rear component
Item Component Function
1 External monitor port Connects an external VGA monitor or projector.
2 Expansion port 3 Connects the computer to an optional docking device or optional expansion
product.
✎
The computer has only one expansion port. The term expansion port
3 describes the type of expansion port.
3 RJ-45 (network) jack Connects a network cable.
4 HDMI port Connects an optional video or audio device, such as a high-definition
television, or any compatible digital or audio component.
5 eSATA/USB port Connects an optional high-performance eSATA component, such as an
eSATA external hard drive, or connects an optional USB device.
6 USB port Connects an optional USB device.
7 1394 port Connects an optional IEEE 1394 or 1394a device, such as a camcorder.
8 ExpressCard slot Supports optional ExpressCard/54 cards.
Component Function
Vent Enables 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.