MSI GE600 User Manual page 34

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7. Keyboard
The built-in keyboard provides all the functions of a standard keyboard.
Quick Launch [Fn] Buttons
Use the [Fn] buttons on the keyboard to activate the specific applications or tools.
With the help of these quick launch buttons, users will be able to work more efficiently.
+
Smart Pad
+
User Defined
Power-Saving GPU mode
Press this sensor to select the Power-Saving GPU mode, and the
internal graphic card will be functioned at once to help extending the
battery running time.
Press and hold the Fn button, and then press the F3 button
repeatedly to enable or disable the Smart Pad function recurrently.
Press and hold the Fn button, and then press the F4 button to
launch the User Defined application.