Corsair Obsidian Series 550D Mid-Tower Quiet Case - Mid-tower - Black - Steel, Aluminum - 10 x Bay - 3 x 7.87", 4.72" x Fan(s) Installed - ATX, Micro ATX Motherboard Supported - 10 x Fan(s) Supported - 4 x External 5.25" Bay - 6 x Internal 3.5" Bay - 8x Slot(s) - 2 x USB(s) - 1 x Audio In - 1 x Audio Out