Antec Sonata III 500 Black 0.8mm cold rolled steel ATX Mid Tower Computer Case 500W Power Supply Motherboard Compatibility: ATX Front Ports: USB 3.0 / Audio 120mm Fans: 1 x rear 120 mm Tricoolâ„¢ fan (standard) with 3-speed control to balance quiet with cooling 1 x front 120 mm case fan (optional) Power Supply Mounted: Top With Power Supply: Yes External 5.25 Drive Bays: 3 External 3.5 Drive Bays: 2