Dell OptiPlex GX280 User Manual
Page 282
1
serial
connector
Connect a serial device, such as a handheld device, to the serial port. The
default designations are COM1 for serial connector 1 and COM2 for serial
connector 2.
For more information, see "System Setup Options."
2
link
integrity
light
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 1-Gbps (or 1000-Mbps)
network and the computer.
Off — The computer is not detecting a physical connection to the
network.
3
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 the back panel of 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 a network connector card, use the connector on the card.
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.
4
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.
5
line-in
connector
Use the blue line-in connector (available on computers with integrated sound)
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.
6
line-out
connector
Use the green line-out connector (available on computers with integrated
sound) to attach headphones and most speakers with integrated amplifiers.
On computers with a sound card, use the connector on the card.
7
microphone
connector
Use the pink microphone connector (available on computers with integrated
sound) to attach a personal computer microphone for voice or musical input
into a sound or telephony program.
On computers with a sound card, the microphone connector is on the card.
8
USB 2.0
connectors
(6)
Use the back USB connectors for devices that typically remain connected,
such as printers and keyboards.
It is recommended that you use the front USB connectors for devices that you
connect occasionally, such as joysticks or cameras, or for bootable USB
devices.
9
diagnostic
lights
Use the lights to help you troubleshoot a computer problem based on the
diagnostic code. For more information, see "
."
10 video
connector
Plug the cable from your VGA-compatible monitor into the blue connector.
NOTE:
If you purchased an optional graphics card, this connector will be
covered by a cap. Connect your monitor to the connector on the graphics
card. Do not remove the cap.
NOTE:
If you are using a graphics card that supports dual monitors, use the
y-cable that came with your computer.
11 parallel
Connect a parallel device, such as a printer, to the parallel connector. If you