Norco 2U Rack Mount Server Chassis - Black RPC-231 Case Type: 2U Rack mount M/B Type: MicroATX (9.6 x 9.6 inch), ITX (6.7 x 6.7 inch) Drive Bays: 4 ( 2x 5.25" external bay; 2x 3.5" internal bay) Cooling System: 3x 40mm Ball Bearing Fans Front Panel: 1x Power On/Off, 1x System Reset; 1x Power On/Off, 1x HDD, 2x Network; 2x USB Ports Power Supply: None,Supports Standard ATX Power Supply