HP ProBook 5220m HP ProBook Notebook PC User Guide - Windows Vista - Page 50
Decreasing screen brightness, Turning wireless features on and off, Muting and restoring speaker sound
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Decreasing screen brightness Press fn+f7 to decrease screen brightness. Hold down the hotkey to decrease the brightness level incrementally. 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. 38 Chapter 3 Pointing devices and keyboard