Elite 310 Chassis in Black with Metallic Blue color front panel with transparent acrylic side window...Compatible with ATX and micro-ATX motherboards in a compact enclosure; Gamer style side panel to reveal the interior; Steel body with ABS plastic; (4) exposed 5.25 Drive Bays; (1) exposed & (6) internal 3.5 Drive Bays; I/O Panel includes (2) USB, (1) Mic, (1) Audio (supports HD audio); Cooling System includes (1) 1200RPM 120x25mm Fan (rear, installed), (1) 120x25mm Fan (front, optional), (1) 80/90/120mm Fan (side, optional); (7) Expansion Slots; 420 Watt Power Supply included; Dimensions: 18.4 W x 7.5 H x 18.89 D, 13 lbs.