How to enter the ATI Control Center with ASUS UX21E Series PowerXpress:
1. Click Start - All Programs - Catalyst Control Center to enter the ATI Control Center.
2. Right-click on the desktop and select Catalyst Control Center to enter the ATI Control Center.
By default, PowerXpress is enabled, and the notebook will switch to the integrated GPU when powered by battery, and to the independent GPU when connected to AC power.
