1. Dimension mm 412 x 185 x 420 H x W x D Drive Bays Expansion Slots Mainboard Fan mm 4 x 5 25 External 2 x 3 50 External 5 x 3 50 Internal 7 ATX Micro ATX Front 1 x 80x80 or 90x90 or 120x120 Optional Rear 1 x 90x90 Standard Side 2 x 120x120 Optional Front Fan Optional Side Fan Optional 1 x 80x80mm 1 x 90x90mm 2 x 120x120mm 1 x 120x120mm a z hay Smooth folded edges Rear Window EMI CE Shield Side fan Air duct Optional dll Textured body Me VGA ventilation Unique design to increase ventilation efficiency 2 x 3 50 External Drive Bay Rear Fan 5 x 3 50 Internal Drive Bay 1 x 80x8O0mm Opt 1 x 90x90mm Standard