Asus MAXIMUS VIII GENE User Manual page 38

3. PCH_LED (PCH_LED1-3)
The PCH_LED is designed to indicate the PCH voltage and PCH PLL voltage.
4. Q-Code LED
The Q-Code LED design provides you with a 2-digit error code that displays the system
status. Refer to the Q-Code table on the following page for details.
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Chapter 1: Product Introduction