Cpu Warning Led (Errcpu1, Errcpu2); Catt Led (Catterrled1) - Asus Z10PC-D8 Series User Manual

3.

CPU Warning LED (ERRCPU1, ERRCPU2)

The CPU warning LEDs light up to indicate failure on either CPU1, CPU2, or both.
4.

CATT LED (CATTERRLED1)

The CATT LED indicates that the system has experienced a fatal or catastrophic error
and cannot continue to operate.
ASUS Z10PC-D8 Series
2-23