Dell Precision Workstation 690 Mode D'emploi page 17

7 USB 2.0 connectors (2)
8 power button
9 power light
10 microphone connector
11 headphone connector
12 network link light
13 diagnostic lights (4)
Use the front USB connectors for devices that you connect occasionally, such as
flash memory keys, cameras, or bootable USB devices (see your User's Guide for
more information).
It is recommended that you use the back USB connectors for devices that typically
remain connected, such as printers and keyboards.
Press to turn on the computer.
NOTICE:
To avoid losing data, do not use the power button to turn off the
computer. Instead, perform an operating system shutdown.
NOTE:
The power button can also be used to wake the system or to place it into
a power-saving state. See your User's Guide for more information.
The power light illuminates and blinks or remains solid to indicate different states:
• No light — The computer is turned off or in a hibernation mode.
• Steady green — The computer is in a normal operating state.
• Blinking green — The computer is in a power-saving state.
• Blinking or solid amber — See "Power Problems" in your User's Guide.
To exit from a power-saving state, 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 states and exiting from a power-saving state,
see your User's Guide.
See "Diagnostic Lights" on page 35 for a description of light codes that can help
you troubleshoot problems with your computer.
Use the microphone connector to attach a personal computer microphone
for voice or musical input into a sound or telephony program.
Use the headphone connector to attach headphones.
The network link light is on when a good connection exists between a 10-Mbps,
100-Mbps, or 1000-Mbps (or 1-Gbps) network and the computer.
Use these lights to help you troubleshoot a computer problem based on the
diagnostic code. For more information, see "Diagnostic Lights" on page 35.
Quick Reference Guide
17