SUPERMICRO CSE-523L-520B Black 2U Rackmount Server Chassis 520W Motherboard Compatibility: 12 x 10 ATX Power Supply: 520W Internal 3.5 Drive Bays: 2 Expansion Slots: 7 x front-side low-profile full-length expansion slots 80mm Fans: 2 x 80mm 6300 RPM fans Dimensions (H x W x D): 14.5 x 17.2 x 3.5