Ideal for use in small productions, clubs, conventions and public events, the Obsidian NX DMX 2-Port DMX Node for ONYX is a fast, easy, and inexpensive way to add two additional DMX ports to your system. The plug-and-play unit provides instant access to DMX In/Out as well as RDM communication. The NX DMX supports the ONYX control platform for up to four universes on unlicensed PCs and up to 255 universes when connected to an ONYX-licensed PC or console.