The DMX USB Pro is industry standard interface for connecting PCs and MACs to DMX512 lighting networks. Compatible with the broadest range of Commercial and Free software it is the fastest and most reliable interface available. Used by thousands of the lighting professionals around the world, it is used in some of the most creative light shows. Although still available for sale, the DMX USB Pro is now superseded by the DMX USB Pro Mk2 Features: USB 2.0 Support on Windows PC and OSX 1500 V full isolation (data & power lines to protect your computer from surges) Input or Output mode RDM enabled Internal frame buffering for steady DMX Generation Drivers for Windows, OSX and Linux Universe & user config EEPROM Refresh Rate configurable from 1 to 40 Fps Break configurable from 96uS to 1.3mS MaB configurable from 10.6uS to 1.3mS Upgradeable firmware Control Software: For a fully supported control software we recommend you use the D-PRO Control Software (Win & OSX)