Dell Latitude C640 - Manual (Page 12)

Connects the computer to a network. The light on the right flashes yellow to indicate
network activity. The light on the left turns reddish-orange when the computer is
connected to a 100-Mbps network; the light turns green for a 10-Mbps network or a
wireless card.
For information on using the network adapter, see the online network adapter
documentation supplied with your computer. See "
Finding Information ."
S-Video TV-Out Connector
Connects your computer to a TV. For more information, see " Connecting a Television to
the Computer ."
Air Vents - The computer uses an internal fan to create airflow through the vents, which prevents the
computer from overheating.
NOTE: The computer turns on the fans when the computer gets hot. The fans may make noise, which
is normal and does not indicate a problem with the fans or the computer.
CAUTION: Do not block, push objects into, or allow dust to accumulate in the air vents.
Doing so can damage the computer or cause a fire.
Audio Connectors