Toshiba TECRA A8 User Manual page 98

The Keyboard
Power plan: Pressing Fn + F2 changes the power settings.
Sleep: Pressing Fn + F3 switches the system to Sleep mode.
Hibernate: Pressing Fn + F4 switches the system to Hibernate mode.
Output: Pressing Fn + F5 changes the active display device.
Brightness Down: Pressing Fn + F6 decreases the computer's display
panel brightness in individual steps.
Brightness Up: Pressing Fn + F7 increases the computer's display panel
brightness in individual steps.
Wireless: Pressing Fn + F8 switches the active wireless devices if the
wireless communication switch is switched on.
If no wireless communication device is installed, no dialog box will appear.
User's Manual 5-4