[[File:Alc-panel.jpg|right|thumb|The wall panel mounted beneath each screen in the ALC.]]To use the screen, simply connect your laptop (or smartphone) to the panel below the screen using the appropriate cable. The screen should come on within a few seconds of sending a signal, unless the A/V system is not turned on. HDMI cables carry audio; if you're using a VGA connection, use the accompanying 3.5 mm audio plugs to connect your headphone/speaker output to the audio input on the wall panel.