SUPERMICRO CSE-826BE16-R1K28LPB Black 2U Rackmount Server Chassis 1280W Redundant Motherboard Compatibility: Up to motherboard sizes -13.68 x 13 Support up to E-ATX 12x13 MB with rear 2.5 HDD option installed Power Supply: 1280W Redundant Hot-Swap Drive Bays: 12 x 3.5 SAS / SATA Hot-swap drive trays Expansion Slots: 7x low-profile full-length expansion slots 80mm Fans: 3x 80mm 4-pin 7000 RPM PWM fans Dimensions (H x W x D): 25.5 x 17.2 x 3.5 (D x W x H) Weight: 52lbs