SUPERMICRO CSE-216BA-R920LPB Black 2U Rackmount Chassis 920W Motherboard Compatibility: E-ATX and ATX Power Supply: 920W 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 PWM fans Dimensions (H x W x D): 17.2 x 3.5 x 24.8 (W x H x D)