Includes pre-installed high performance silent (black with black blades) Xigmatek XOF fan with FCB (Fluid Circulative Bearing) for optimal exhaust capabilities. I/O panel includes 2 x USB 3.0, HD Audio In/Out jacks, Power/Reset. Capable of mounting Mini-ITX Motherboard. Innovative 2 x 3.5" HDD can be converted to 2.5" SSD for easy mix and match. Includes additional 2.5" SSD mounting holes inside chassis. All 3 side panels are tool-less and designed with quick release mechanism for easy hardware mounting. Can install ATX power supply. Innovative intake system from base of the tower. Motherboard tray perforated with holes for free flow air into chassis and option for cable tie-down. Can mount up to 230mm long graphics cards. Angled power/HDD light giving visual depth. Polycarbonate side panels for alternative feel. Baseless construct for sleek compact appearance.