SUPERMICRO CSE-216BE26-R920LPB Black 2U Rackmount Chassis 920W high-efficiency AC-DC Redundant power supplies with PMBus and I2C Motherboard Compatibility: E-ATX and ATX Power Supply: 920W high-efficiency AC-DC Redundant power supplies with PMBus and I2C Hot-Swap Drive Bays: 24x 2.5 SAS / SATA Hot-swap drive trays SAS or enterprise SATA HDD only recommended Expansion Slots: 7x low-profile expansion slots 80mm Fans: 3x 80mm 7000 RPM hot-swap PWM fans Dimensions (H x W x D): 17.2 x 3.5 x 24.8 (W x H x D) Weight: 35 lbs.