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