Obsidian NX DMX 2-Port USB DMX NodeNX DMX is a USB powered 2 port DMX Node. It provides instant access to DMX In and Outputs as well as RDM communication. The device is plug and play and requires no drivers or additional configuration to integrate with ONYX. It is designed to work with any PC but also works with any ONYX console as a fast and affordable way to add two additional DMX ports. NX DMX supports ONYX on PC systems for up to four Universes without any dedicated license. When