Dell OptiPlex 755 - Manual (Page 39)

Quick Reference Guide
39
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 the
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 for Windows XP
and Vista" in the User’s Guide.
See "Dell Diagnostics" on page 61 for a description of light
codes that can help you troubleshoot problems with your
computer.
8 headphone
connector Use the headphone connector to attach headphones and
most kinds of speakers.
9 microphone
connector Use the microphone connector to attach a microphone.
10 3.5-inch drive
bay Can contain an optional slimline floppy drive or optional
media card reader.
11 5.25-inch drive
bay Can contain a slimline optical drive. Insert a CD or DVD
(if supported) into this drive.