Supermicro SuperChassis 900W Mid-Tower Sever Chassis CSE-732D4-903B Case Type: Mid-Tower Chassis M/B Type: EATX (12.0 x 13.0 inch), ATX (12.0 x 10.0 inch), MicroATX (9.6 x 9.6 inch) Ports: 2x USB 3.0 Ports, 2x USB 2.0 Ports, 2x HD/AC97 Audio Ports Internal: 4x 3.5'' SAS/SATA HDD Bays Peripheral: 2x 5.25" Peripheral Drive Bays, 1x 3.5" Peripheral Drive Bay? Expansion Slots: 7x Full-height, Full-length I/O Expansion Slots Cooling System: 1x 120mm (1850rpm) Rear Exhaust Fan Chassis Only. Does not include CPU, MB, HDD, memory or other parts.