Supermicro SuperServer SYS-110D-4C-FRAN8TP User Manual page 66

Overheat/Fan Fail/Power Fail LED
LED3 is the Overheat/Fan Fail/Power Fail LED. Refer to the table below for more information.
Onboard Power LED
LEDPWR is the onboard Power LED. When this LED is on, the system is on. Turn off the
system and unplug the power cord before removing or installing components. Refer to the
table below for more information.
Overheat/Fan Fail/Power Fail LED
LED Color Definition
Solid Red System Overheat
Blinking Red Fan Fail or PWR Fail
Onboard Power LED Indicator
LED Color Definition
System Off (power cable
Off
not connected)
Green System On
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Chapter 4: Motherboard Connections