Supermicro 500 Watt Mid Tower Super Chassis, Black (CSE-733I-500B) Case Type: Mid Tower & Workstation Chassis M/B Type: E-ATX, Max Size 12 x 13 inch Processor Support: Dual/Single Intel/AMD Processor Drive Bays: 4x 3.5'' SAS/SATA Internal Drive Bays Cooling System: 1x 120mm (1850rpm) Exhaust Rear Fan Front I/O Panel: 2x USB 2.0 Ports Power Supply: 80 PLUS Bronze Certified 500W AC Power Supply with PFC