Features: brand new and high quality DMX-512 compatible output (512 channels). Buffer the DMX data in the interface. Connected to the computer by USB cable, PC USB port directly powered. Support OS include Win98SE, Win2000, WinXP, for Windows Vista and for Windows 7 (32 and 64 bit). Attention: please install driver at first, Otherwise will appear "DLL error." you must copy ourplugin DLL file to these control software directory, or run our pluginsoftware,plugin software will auto connect control software. Specifications: Material: Metal Color: Black Product Dimension: approx. 90x70x42mm/3.54x2.76x1.65inches Net Weight: 430g/0.95lbs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x USB-DMX512 512-Channel Lighting Controller 1x CD (include control software and driver) 1x USB cable