R31611 Server Case Specifications Dimension(WxDxH) 3U (480mm 640mm 133.5mm) Sheet Metal 1.0mm SECC Mother Board Support 12"x13" and below Power Supply Support Redundant I/O shield 1 FD N/A CD-ROM N/A Front USB 2 System Cooling Fans B8038*4 fans(STD) Expansion Slots 7 slot Drive Bays 16x3.5" HDD bays Safety Design of anti-EMI