iStar D Storm D-400 4U Rackmount Server Chassis Case Type: 4U Rackmount Material: Front Bezel- Aluminum alloy, Handle- SECC Zinc-Coated Steel, Main Chassis- 1.2mm SECC Zinc-Coated Steel ( Japan Made ) M/B Type: ATX, Micro-ATX, Up to 12.0 x 9.6 inch External Bays: 1x 3.5'' Drive Bay; 4x 5.25" Drive Bays Internal Bays: 2x 3.5'' Drive Bays Case Type: 4U Rackmount Material: Front Bezel- Aluminum alloy, Handle- SECC Zinc-Coated Steel, Main Chassis- 1.2mm SECC Zinc-Coated Steel ( Japan Made ) M/B Type: ATX, Micro-ATX, Up to 12.0 x 9.6 inch External Bays: 1x 3.5'' Drive Bay; 4x 5.25" Drive Bays Internal Bays: 2x 3.5'' Drive Bays Cooling System: 1x 80mm Cooling Fan; 1x 120mm Cooling Fan