Asus RS926-E7/RS8 - Manual (Page 74)

4-20 Chapter 4: Motherboard information
6. Q-Code LED (LED1_LED2)
The Q-Code LED provides you a 2-digit display that shows the system status.
Refer to the Q-Code table below for more details.
5. 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.
• Everytime after the AC power is replugged, you have to wait for about 30
seconds for the system to power up.