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Chapter 4: Motherboard Connections
4.6 LED Indicators
BMC Heartbeat LED
BMC_HB_LED1 is the BMC heartbeat LED. When the LED is blinking green, BMC is
functioning normally.
BMC LED Indicator
LED Color
Definition
Blinking Green
BMC Normal
Power LED
LED1 is an Onboard Power LED. When this LED is lit, it means power is present on the
motherboard. In suspend mode, this LED will blink on and off. Be sure to turn off the system
and unplug the power cord before removing or installing components.
Onboard Power LED Indicator
LED Color
Definition
Off
System Off
(power cable not
connected)
Green
System On
