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Onboard Power LED
The Onboard Power LED is located at LE2 on the motherboard. When this LED is on, the
system is also 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.
Unit ID LED
A rear UID LED indicator at 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.
Onboard Power LED Indicator
LED Color
Definition
System Off (power
Off
cable not connected)
Green
System On
UID LED
LED Indicator
LED Color
Definition
Blue: On
Unit Identified
UID SWITCH
UID LED
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Chapter 4: Motherboard Connections
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