HP ProBook 5220m Notebook PC - Manual (Page 25)

Increasing screen brightness
Press fn+f8 to increase screen brightness. Hold down the hotkey to increase the brightness level
incrementally.
Turning wireless features on and off
Press fn+f9 to turn the wireless feature on or off. Note that this hotkey cannot be used to establish a
wireless connection.
Muting and restoring speaker sound
Press fn+f10 to mute speaker sound. Press the hotkey again to restore speaker sound.
Decreasing speaker volume
Press fn+f11 to decrease speaker volume. Hold down the hotkey to decrease speaker volume
incrementally.
Increasing speaker volume
Press fn+f12 to increase speaker volume. Hold down the hotkey to increase speaker volume
incrementally.
Using keypads
The computer has an embedded numeric keypad and also supports an optional external numeric keypad
or an optional external keyboard that includes a numeric keypad.
Component Description
(1) fn key Enables/disables the embedded numeric keypad when pressed in
combination with the
num lk key.
Using keypads 17