Dell Precision 490 Desktop - Manual (Page 23)

Quick Reference Guide
23
5 network adapter
connector 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.
6 network activity light 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.
7 USB 2.0 connectors (5) It is recommended that you use the front USB connectors for devices that you
connect occasionally, such as flash memory keys or cameras, or for bootable
USB devices.
Use the back USB connectors for devices that typically remain connected,
such as printers and keyboards.
8 PS/2 keyboard connector 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.
9 line-in 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.
10 serial connector 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.
11 serial connector 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.