SpecificationsMfr Part Number: RM42300-FCase Type: 4U RackmountMaterial: 1.2mm SGCC Sheet Metal, ABS-HB Plastic MaterialM/B Type: CEB (12 x 10.5 inch)Processor Support: Intel/AMD UP Quad, Intel/AMD DP QuadDrive Bays: 9External Bay: 3x 5.25", 1x 3.5", 1x Slim ODD (or 2.5" HDD kit)Internal Bay: 4x 3.5"Expansion Slots: 7Cooling System: 1x (120x25mm) Front FanFront I/O Panel: 2x USB PortsPower Supply: NoAdd-on Card RetainerDimensions (WxDxH): 16.9 x 17.5 x 6.9 inch / 430.0 x 445.0 x 176.0 mm