Dell Precision D490 Quick Reference Manual page 20

5 link integrity light
6 network adapter
connector
7 network activity light
8 USB 2.0 connectors (2)
9 IEEE 1394 connector
10 keyboard connector
11 line-in connector
serial connector
12
13 serial connector
20
Quick Reference Guide
• Green — A good connection exists between a 10-Mbps network and the
computer.
• Orange — A good connection exists between a 100-Mbps network and the
computer.
• Yellow — A good connection exists between a 1000-Mbps (or 1-Gbps) network
and the computer.
• Off — The computer is not detecting a physical connection to the network.
To attach your computer to a network or broadband device, connect one end of a
network cable to either a network jack or your network or broadband device.
Connect the other end of the network cable to the network adapter connector on
your computer. A click indicates that the network cable has been securely
attached.
NOTE:
Do not plug a telephone cable into the network connector.
On computers with an additional network connector card, use the connectors on
the card and on the back of the computer when setting up multiple network
connections (such as a separate intra- and extranet).
It is recommended that you use Category 5 wiring and connectors for your
network. If you must use Category 3 wiring, force the network speed to 10 Mbps to
ensure reliable operation.
Flashes a yellow light when the computer is transmitting or receiving network
data. A high volume of network traffic may make this light appear to be in a steady
"on" state.
It is recommended that you use the front USB connectors for devices that you
connect occasionally, such as flash memory keys, cameras, or bootable USB
devices.
Use the back USB connectors for devices that typically remain connected, such as
printers and keyboards.
Use the IEEE 1394 connector for high-speed data devices such as digital video
cameras and external storage devices.
If you have a standard keyboard, plug it into the purple keyboard connector. If you
have a USB keyboard, plug it into a USB connector.
Use the blue line-in connector to attach a record/playback device such as a cassette
player, CD player, or VCR.
On computers with a sound card, use the connector on the card.
Connect a serial device, such as a handheld device, to the serial port. If necessary,
the address for this port can be modified through System Setup (see your User's
Guide for more information).
Connect a serial device, such as a handheld device, to the serial port. If necessary,
the address for this port can be modified through System Setup (see your User's
Guide for more information).