Optional Front USB &Multimedia port Optional side panel: a.normal steel panel b. Air-duct 4pcs for CD room,2pcs for FDD,7pcs for HD Dimension:430 * 180 * 410 mm packing size:484 * 226 * 453 mm 40HQ/40FT/20FT:1350/1250/580pcs White /Silver / Black /Blue