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.
4
LAN
This light indicates that a LAN (network) connection is established. indicator light
5
diagnostic lights Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic Lights."
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 modes:
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.
8
hard-drive activity light
This light will flicker when the hard drive is being accessed.
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.
Back View
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Mini Tower Computer: Dell OptiPlex GX620<br>User's Guide
1 cover release latch This latch allows you to open the computer cover.
2 padlock ring
Insert a padlock to lock the computer cover.
3 voltage selection switch
Your computer is equipped with a manual voltage selection switch.
To help avoid damaging a computer with a manual voltage selection switch, set the switch for the voltage that most closely matches the AC power available in your location.
NOTICE: The voltage selection switch must be set to the 115-V position even though the AC power available in Japan is 100 V.
Also, ensure that your monitor and attached devices are electrically rated to operate with the AC power available in your location.
4 power connector Insert the power cable.
5 back-panel connectors Plug serial, USB, and other devices into the appropriate connector.
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Mini Tower Computer: Dell OptiPlex GX620<br>User's Guide
Access connectors for any installed PCI and PCI Express cards.
Back-Panel Connectors
1
parallel connector 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
