ASUS Z87-A User Manual

Page of 100
1-27
Chapter 1: Product introduction
1.7 
Onboard LEDs
1. 
EPU LED
The EPU LED lights up when the EPU switch is enabled.
4. 
EPU switch
Enable this switch to automatically detect the current PC loadings and intelligently 
moderate the power consumption.
Enable this switch when the system is powered off.
• 
The EPU LED (OLED2) near the EPU switch lights up when the EPU switch is 
enabled. Refer to section 1.7 Onboard LEDs for the exact location of the EPU LED.
• 
If you enable this switch under Windows
®
 OS environment, the EPU function will be 
activated after the next system bootup.
• 
You may change the EPU settings in the software application or BIOS setup program 
and enable the EPU function at the same time. However, the system will use the last 
setting you have made.