LED projector E-Manual 9ContrastPress this button to set the difference between lighten or darkenyour projection onscreen.VGA HDMIMedia Center*Press this button to launch the Media Center.NOTE: For more details, refer to the Using the Media Center section inthis manual.VGA HDMIVGA*Press this button to start the connection with your input device viathe mini VGA port.VGA HDMI HDMI*Press this button to start the connection with your input device viathe HDMI port.* on selected models only