3.
CPU warning LED (ERR_CPU1/2)
The CPU warning LEDs light up to indicate that an impending failure of the
corresponding CPU.
The warning LEDs function only when you install the ASUS ASMB6.
4.
CATT Error LED (CATTERR_LED1)
Indicates that the system has experienced a fatal or catastrophic error and
cannot continue to operate.
ASUS Z9NR-D12
2-21