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About Your System 11
Front-Panel Features and Indicators
Figure 1-1 shows the controls, indicators, and connectors located behind the optional rack bezel on the
system's front panel.
Figure 1-1. Front-Panel Features and Indicators
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Table 1-2. Front-Panel LED Indicators, Buttons, and Connectors
Item Indicator, Button, or Connector Icon Description
1 Power-on indicator, power
button
The power button controls the DC power supply output
to the system.
NOTE: If you turn off the system using the power button
and the system is running an ACPI-compliant operating
system, the system performs a graceful shutdown before
the power is turned off. If the system is not running an
ACPI-compliant operating system, the power is turned off
immediately after the power button is pressed.
2 NMI button Used to troubleshoot software and device driver errors
when using certain operating systems. This button can
be pressed using the end of a paper clip.
Use this button only if directed to do so by qualified
support personnel or by the operating system's
documentation.
3 System identification button The identification buttons on the front and back panels
can be used to locate a particular system within a rack.
When one of these buttons is pushed, the blue system
status indicator on the front and back blinks until one of
the buttons is pushed again.