Dell Precision T3400 Guide De Référence Rapide page 13

10 power light
11 microphone
connector
12 headphone connector Use the headphone connector to attach headphones.
13 diagnostic lights (4)
14 network link light
The power light illuminates and blinks or remains solid
to indicate different states:
• No light — The computer is turned off (S4, S5, or
mechanical OFF).
• Steady green — The computer is in a normal
operating state.
• Blinking green — The computer is in a power-
saving state (S1 or S3).
• 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 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 "Power Management" in your
User's Guide.
For a description of diagnostic light codes for
troubleshooting problems with your computer, see
"Diagnostic Lights" on page 33.
Use the microphone connector to attach a personal
computer microphone for voice or musical input into
a sound or telephony program.
Use the diagnostic lights to help you troubleshoot
a problem with your computer (see "Diagnostic Lights"
on page 33).
The network link light is on when a good connection
exists between a 10-Mbps, 100-Mbps, or 1000-Mbps
(1-Gbps) network and the computer.
Quick Reference Guide
13