Gateway M-1412 Reference Manual page 41

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Press and hold
F , then press
N
this system key...
To...
Increase the brightness of the display.
Decrease the brightness of the display.
Increase volume. For more information, see
"Adjusting the volume" on page
Decrease volume. For more information, see
"Adjusting the volume" on page
Mute the sound. Press the key combination
again to restore the sound. For more
information, see "Adjusting the volume" on
page 49.
49.
49.
33