Dell OptiPlex 755 Quick Reference Manual page 39

7 power light
8 headphone
connector
9 microphone
connector
10 3.5-inch drive
bay
11 5.25-inch drive
bay
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.
Use the headphone connector to attach headphones and
most kinds of speakers.
Use the microphone connector to attach a microphone.
Can contain an optional slimline floppy drive or optional
media card reader.
Can contain a slimline optical drive. Insert a CD or DVD
(if supported) into this drive.
Quick Reference Guide
39