1-41EnglishScreen Brightness ControlTo adjust the LCD brightness press the Fn + ( ) key combination or the Fn + ( ) keycombination.The changed screen brightness is displayed at the center of the screen for a moment.You can use the screen brightness control keys after installing Windows and EasyDisplay Manager.Volume ControlTo control the volume, press the Fn + ( ) key combination or the Fn + ( ) key combination.You can mute the sound or cancel the mute function by clicking the Fn + ( ) key combination.You can use the volume and numeric keys after installing Windows XP or Windows7/Vista.Numeric KeyOnce the Num Lock is on, the Num Lock light is lit and the numeric keypad is enabled.You can only use the numeric keys after installing Windows XP or Windows 7/Vista.