Asus M4A89GTD PRO/USB3 - Manual (Page 42)

2-24 Chapter 2: Hardware information
Chapter 2
3. Core Unlocker switch
This switch allows you to unlock the extra cores of your CPU.
• The O2LED4 LED near the Core Unlocker switch lights when the switch setting is
turned to Enable. Refer to section 2.9 Onboard LEDs for the exact location of the
O2LED4 LED.
• If you clear the CMOS or load the BIOS setup defaults, the ASUS Core Unlocker item
in the BIOS menu follows the current setting of the Core Unlocker switch.
• You may also press <4> during the Power-On-Self-Test (POST) to activate the Core
Unlocker function.
For ensuring the system performance, turn the switch setting to Enable when the system is
powered off.