With the SnapX, switching from your MacBook Air to your Mac mini is a "snap" away. Toggle between the two sources by pressing the button on top and watch the LED light switch. No external power required for the SnapX * Use your iSight camera and get full audio from the display"s built-in speakers seamlessly with the use of USB pass through cables * SnapX provides a convenient length of 5ft. (1.5m) dual cables built-in to the unit, thus providing an extension without unnecessary cables and adapters * For optimum flexibility and ergonomics, SnapX easily clips on by just sliding underneath your Apple LED Cinema Display stand. Functionally designed for any desktop or office application that requires secured switching and extending without compromise