Enermax iVektor Computer Cases ECA3310A-B (Black) Support dual USB 3.0 ports and dual USB 2.0 ports Oversized acrylic window with clear view to show off internal rigs 8 x 3.5" with upper HDD bracket in 3.5" position 5 x 2.5" + 3 x 3.5" with upper HDD bracket in 2.5" position, 3 x 3.5" with upper HDD bracket being removed for maximized VGA card cooling Dual 12cm fan slots in front for maximized airflow, Support 240mm radiator on top ENERMAX patented SlideInTM ODD design, Rails with rubber pads for easy 3.5"/2.5" device installation 30mm clearance behind M/B tray for easy cable routing, Cut-out for quick CPU cooler montage Removable dust filters at bottom for easy cleaning