The model VCX-4400-E is the the stand-alone MPEG-4 Encoder version of the VCX family. This model is available in half size, "-H" (8.5-inch wide 1U) or full size (19-inch wide 1U). The full size includes a LED diagnostic display. The VCX-4400-E may also come as the "-R" card cage version of the product series.