Asus Z9PA-U8 - Manual (Page 39)

ASUS Z9PA-U8 2-19
2.6 Onboard LEDs
1. 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.
2. CPU warning LED (ERR_CPU)
The CPU warning LEDs light up to indicate an impending failure of the
corresponding CPU.
• The heartbeat LED functions only when you install the ASUS ASMB6.
• Everytime after the AC power is replugged, you have to wait for about 30
seconds for the system to power up.