Dell Precision T3400 (Late 2007) - Manual (Page 13)

Quick Reference Guide 13
10 power 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.
11 microphone
connector Use the microphone connector to attach a personal
computer microphone for voice or musical input into
a sound or telephony program.
12 headphone connector Use the headphone connector to attach headphones.
13 diagnostic lights (4) Use the diagnostic lights to help you troubleshoot
a problem with your computer (see "Diagnostic Lights"
on page 33).
14 network link light 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.