Supermicro 500 Watt Mid Tower Super Chassis, Black (CSE-732D2-500B) Form Factor: Mid-Tower chassis support for motherboard sizes 12-Inch x 13-Inch E-ATX, 12-Inch x 10-Inch ATX and 9.6-Inch x 9.6-Inch Micro-ATX Expansion Slots: 7x Full-height, Full-length I/O expansion slots Ports: 2x Front USB 2.0 ports, 2x Front HD/AC97 Audio ports Power Supply: 500W AC power supply with PFC Certification: 80 PLUS Bronze Certified