Acer TravelMate 5542 Quick Start Guide - Page 8

6 English Hotkeys The computer employs hotkeys or key combinations to access most of the computer's controls like screen brightness and volume output. To activate hotkeys, press and hold the key before pressing the other key in the hotkey combination. Hotkey Icon + + Function Description Communication Enables / disables the computer's communication devices. (Communication devices may vary by configuration.) Sleep Puts the computer in Sleep mode. + + + + Display toggle Display off Switches display output between the display screen, external monitor (if connected) and both. Turns the display screen backlight off to save power. Press any key to return. Touchpad toggle Turns the touchpad on and off. Speaker toggle Turns the speakers on and off. + < > + < > + < > + < > Volume up Increases the sound volume. Volume down Decreases the sound volume. Brightness up Increases the screen brightness. Brightness down Decreases the screen brightness.