Enermax Coenus ATX Mid Tower Computer Case - GunMetal Grey ECA3290A-G Dual USB 3.0 ports with internal 19-pin and USB 2.0 headers; Oversized acrylic window with clear view to show off internal rigs Flexible HDD configuration allows customized system build: 3 x 3.5" with upper HDD bracket being removed for maximized VGA card cooling ENERMAX patented SlideIn ODD design (Patent no. M438105) for Easy installation 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 maintenance Supreme cooling performance with 6 x fan support; Support ENERMAX UCTA18A/UCTVQ18A x 1 on top: Removable dust filters at bottom for easy cleaning