Dell OptiPlex GX520 - Manual (Page 9)

Quick Reference Guide
9
1 CD/DVD drive Insert a CD or DVD (if applicable) into this drive.
2 floppy drive Insert a floppy disk into this drive.
3 USB 2.0 connectors (2) Connect USB devices such as a mouse, keyboard, memory key, printer, joystick, and
computer speakers into either of the USB connectors.
It is recommended that you use the USB connectors on the back panel for devices that
typically remain connected, such as printers and keyboards.
4 LAN indicator light This light indicates that a LAN (network) connection is established.
5 diagnostic lights Use these lights to help you troubleshoot a computer problem based on the diagnostic
code. For more information, see "Diagnostic Lights" on page 32.
6 power button Press 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.
7 power light The power light illuminates and blinks or remains solid to indicate different operating
states:
• 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" in your online
User’s Guide.
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" in your online
User’s Guide.
See "System Lights" on page 31 for a description of power light patterns that can help
you troubleshoot problems with your computer.
8 hard-drive activity light This light flickers when the hard drive is in use.
9 headphone connector Use the headphone connector to attach headphones and most kinds of speakers.
10 microphone connector Use the microphone connector to attach a microphone.