Chenbro RM31408M2 No Power Supply 3U Rack Mount Server Chassis with 6Gb/S Mini-SAS Backplane Case Type: 3U Rack mount Material: 1.2mm ABS-HB SGCC M/B Type: EEB (12 x 13 inch) Processor Support: Intel / AMD DP Quad Expansion Slots: 7 Backplane: 6Gb/s Mini-SAS Cooling System: 4x 80x32mm Hot-Swap Middle Fan Front I/O Panel: 1x USB2.0 Port