Supermicro SuperServer SYS-741P-TR User Manual page 93

Onboard Power LED
The Onboard Power LED is located at LEDPWR on the motherboard. When this LED is on,
the system power is on. Be sure to turn off the system power and unplug the power cord
before removing or installing components. Refer to the table below for more information.
BMC Heartbeat LED
A BMC Heartbeat LED is located at LEDBMC on the motherboard. When LEDBMC is blinking
green, the BMC is functioning normally.
Onboard Power LED Indicator
LED Color Definition
System Power Off (power cable not
Off
connected)
Green System Power On
BMC Heartbeat LED Indicator
LED Color Definition
Green: Blinking BMC Normal
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Chapter 4: Motherboard Connections