Asus M4A89TD PRO/USB3 User Manual page 39

2. Turbo Key II switch
This switch allows you to auto-tune your CPU to enhance the system performance.
For ensuring the system performance, turn the switch setting to Enable when the system is
powered off.
• The O2LED5 LED near the Turbo Key II switch lights when the switch setting is turned
to Enable. Refer to section 2.8 Onboard LEDs for the exact location of the O2LED5
LED.
• If you clear the CMOS or load the BIOS setup defaults, the related overclocking items
in the BIOS menu follow the current setting of the Turbo Key II switch.
• If you change the switch setting to Enable under the OS environment, the Turbo Key II
function will be activated after the next system bootup.
• You may use the TurboV Auto Tuning, overclock in the BIOS setup program, and
enable the Turbo Key II function at the same time. However, the system will use the
last setting you have made.
ASUS M4A89TD PRO Series 2-21