Use the front USB connectors for devices that you connect
occasionally, such as joysticks or cameras, or for bootable USB devices
(see "System Setup" for more information on booting to a USB device).
It is recommended that you use the back USB connectors for devices
that typically remain connected, such as printers and keyboards.
4LAN
This light indicates that a LAN (network) connection is established.
indicator light
5diagnostic
lights
Use the lights to help you troubleshoot a computer problem based on
the diagnostic code. For more information, see "Diagnostic Lights."
6power buttonPress this button to turn on the computer.
NOTICE: To avoid losing data, do not turn off the computer by pressing
the power button for 6 seconds or longer. Instead, perform an operating
system shutdown.
NOTICE: If your operating system has ACPI enabled, when you press
the power button the computer will perform an operating system
shutdown.
7power lightThe power light illuminates and blinks or remains solid to indicate
different operating modes:
8hard-drive
activity light
9headphone
connector
10 microphone
connector
Back View
No light — The computer is turned off.
Steady green — The computer is in a normal operating state.
Blinking green — The computer is in a power-saving mode.
Blinking or solid amber — See "Power Problems."
To exit from a power-saving mode, press the power button or use the
keyboard or the mouse if it is configured as a wake device in the
Windows Device Manager. For more information about sleep modes
and exiting from a power-saving mode, see "Power Management."
See "Diagnostic Lights" for a description of light codes that can help
you troubleshoot problems with your computer.
This light will flicker when the hard drive is being accessed.
Use the headphone connector to attach headphones and most kinds of
speakers.
Use the microphone connector to attach a microphone.
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Mini Tower Computer: Dell OptiPlex GX620<br>User's Guide
Connect a parallel device, such as a printer, to the parallel connector. If
you have a USB printer, plug it into a USB connector.
NOTE: The integrated parallel connector is automatically disabled if the
computer detects an installed card containing a parallel connector
configured to the same address. For more information, see "System
Setup Options."
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.
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.
4network
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.
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