Asus RS700-X7/PS4 - Manual (Page 61)

ASUS RS700-X7/PS4 4-19
4.4 Internal LEDs
1. Standby Power LED
The motherboard comes with a standby power LED. The green LED lights up
to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a
reminder that you should shut down the system and unplug the power cable
before removing or plugging in any motherboard component. The illustration
below shows the location of the onboard LED.
2. Baseboard Management Controller LED (BMC_LED1)
The BMC LED works with the ASUS ASMB6 management device and
indicates its initiation status. When the PSU is plugged and the system is
OFF, ASUS ASMB6 management device starts system initiation for about one
(1) minute. The BMC LED blinks after system initiation finishes.
The heartbeat LED functions only when you install the ASUS ASMB6.