Available Color Black ( Green Mesh) Dimension (W / H / D) (W)250mmx(H)536mmx(D)638mm Material Aluminum : 1.0 mm M/B Type E-ATX, ATX, m-ATX 5.25" Drive Bay 9 (Exposed) 3.5" Drive Bay 4 (Hidden) from one 4-in-3 Device Module included;, Two 3.5 face plates included Weight Net Weight : 14.5 kg ; Gross Weight : 17 kg I/O Panel Dual I/O Panel in the front and top, USB 2.0x4, IEEE 1394 x1, MICx1, SPKx1(Support HD Audio) Cooling System One 120x120x25 mm front fan (LED), One 120x120x25 mm rear fan (exhaust)), Support up to 9 x 120 mm fans : Front fan x 3,top fan x 1, rear fan x 1,side fan x 4, (side fan tray can be installed with 140 mm fan) Expansion Slots 7 BTX Upgrade Kits SRM, BTX Air Duct, and BTX I/O shield(optional) Power Supply Standard ATX PS2 / EPS 12V(optional) Certification First EVER Chassis that is SLI-Ready!! Certified by NVidia