This is a refurbished ENTTEC DMX USB Pro 512 channel interface in very good condition. It provides reliable USB to DMX conversion for controlling stage lighting, theatrical systems, and other DMX-compatible devices. The unit is suitable for lighting technicians, stage designers, or venue operators looking for a cost-effective solution. Free shipping is included with this purchase. Please check the listing for full details on compatibility and any included accessories before ordering. ENTTEC DMX USB Pro 512-Ch USB DMX Interface. Condition: Very Good - Refurbished. Listed at 137.70 USD. Need to get your computer hooked up to your lights? You need the ENTTEC DMX USB Pro interface. With this super-fast interface you can control all of your lights from your computer. The DMX USB Pro is one of the fastest interfaces on the market, it can push up to 850 frames per second. You can also use 3rd party controllers and tools without any issue. Create and execute killer light shows right from your laptop. Control your lighting rig from your computer with the ENTTEC DMX USB Pro.