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About Your System

Front-Panel Features And Indicators

Figure 1. Front-Panel Features and Indicators

Figure 2. Front-Panel Features and Indicators for a Software RAID System

Item

Indicator, Button, or

Icon

Description

 

Connector

 

 

 

 

 

 

1

Power-on indicator, power

 

The power-on indicator lights when the system power is

 

button

 

on. The power button controls the power supply output to

 

 

 

the system.

 

 

 

NOTE: On ACPI-compliant operating systems, turning

 

 

 

off the system using the power button causes the

 

 

 

system to perform a graceful shutdown before power

 

 

 

to the system is turned off.

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.

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Dell R520, E19S owner manual Front-Panel Features And Indicators, Indicator, Button, or Icon Description Connector