Xpress-512s is a powerful DMX interface that lets you control showxpress lighting control software on either Windows and Mac OS X systems. You can easily store and play back 1 show without a computer. This self-contained, aluminum unit controls up to two DMX universes one Full DMX universe and an additional artnet universe. Adding additional universes is easy by connecting additional interfaces. Xpress-512s is hot-swappable and automatically re-connects within seconds. The unit also has built-in electrostatic discharge and ground loop protection circuits.