Enttec DMXIS 70570 USB MAC OS & PC Controller & Software 512 Channels Outputs one DMX-512 universe (512 channels of control) Includes both Hardware & Software For Mac OS X & PC Windows Full microprocessor control (guarantees reliable DMX operation) Runs as a standalone program, VST plug-in, or Audio Unit plug-in** 1/4 Footswitch input* for easy scene switching