Asus Z87-WS - Manual (Page 46)

1-30 Chapter 1: Product introduction
Chapter 1
6. PGLED3 LED
The ASUS Dr. Power LED near the ASUS Dr. Power switch lights up when the ASUS
Dr. Power switch is on Enable.
7. +12V_PWR LED
The ASUS Dr. Power LED near EATX12V connector lights up when the ASUS Dr.
Power switch setting is on enable and there is no power detected going into the
processor.