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Chapter 4: Motherboard Connections
Onboard Power LED
The Onboard Power LED is located at LEDPWR on the motherboard. When this LED is on,
the system is on. Be sure to turn off the system and unplug the power cord before removing
or installing components. Refer to the table below for more information.
Onboard Power LED Indicator
LED Color
Definition
Off
System Off
(power cable not
connected)
Green
System On
UID LED
LED Indicator
LED Color
Definition
Blue: On
Unit Identified
Unit ID LED
A rear UID LED indicator (UID-LED1) is located near the UID switch on the I/O back panel.
This UID indicator provides easy identification of a system unit that may need service.