Reactor Z1-500 cabinet comes in black and radiant red color. It is enormously spacious. This beast has an irresistible look with powerful specifications. This cabinet makes you feel like an Ace. Reactor is strongly built for high performance with artfully crafted exterior. It looks stylish with its spunky edges. This gaming case is made of Acrylic and Steel for endurance and stability, that makes it real tough. I/O Panel Reactor Z1-500 is equipped with an upgraded I/O panel. You also get memory card reader, fan speed controller and 4 USB ports including 2 USB 3.0 and USB2.0 +HD Audio. The classy I/O includes 2 high speed USB 3.0 ports for quicker data transfer. This mighty metallic cabinet with chassis size L400*W183*H420mm and case size L478*W208*H508mm supports 2 hidden HDD bays of 3.5", 3 SSD bays of 2.5" which is used for faster boot times and data read/write speeds and 2 optional drive bays of 5.25'. It supports 400mm mega graphic card and have 7 PCI expansion slots. REACTOR Z1-500 (Black) Front Panel ABS, Side Panel Window Side Chassis SPCC 0.5mm, Black interior Motherboard ATX, MATX USB2.0+HD Audio x2 USB3.0 x2 Card Reader x1 Fan Control x2 PSU Port Bottom / ATX Tool Free Kits ODD: 3pcs Reserved Fan Ports Front 1x12cm Rear 1x12cm Top 2x12cm (Optional) Drive Bays 5.25" Exposed x3 3.5" Hidden x2 2.5" SSD x3 PCI Expansion Slots x7 Case L478*W208*H508 mm Max. VGA Card 400 mm Max. CPU Cooler 159 mm Support Cable Management 23 mm.