Chenbro RM31616M2-R620 620 Watts 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 x13 inch) Processor Support: Intel / AMD DP Quad Backplane: 6Gb/s Mini-SAS Security: Intrusion Switch Cooling System: 4x 80x38mm Hot-Swap Middle Fan Front I/O Panel: 2x USB2.0 Ports