SUPERMICRO CSE-216A-R900UB Black 2U Rackmount Server Case 900W Redundant Motherboard Compatibility: Support for maximum motherboard size of 13.68 x 13 Power Supply: 900W Redundant Hot-Swap Drive Bays: 24 x 2.5 SAS/SATA Expansion Slots: 1x Full-height Universal I/O Expansion Slot (Riser Card Required) 3x Full-height, Full-length expansion slot 3x Low-profile Expansion Slots 80mm Fans: 3 Dimensions (H x W x D): 24.8 x 17.2 x 3.5 Weight: 54 lbs.