Toshiba NB250 series User Manual page 70

Sleep: Pressing FN + F3 switches the system to Sleep mode.
Hibernate: Pressing FN + F4 switches the system to Hibernation 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 no wireless communication device is installed, no dialog box will
appear.
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This hot key is available only when the wireless communication is set
to enabled in BIOS Setup.
User's Manual
The Keyboard
5-4