Size Mainboard CaseMini-ITX, Micro-ATX, ATX, E-ATX, SSI CEB, SSI EEB | max. 330 x 305 mm 481 x 685 x 134mm (WxDxH) HDD/ ODD Mounting space5,25" external 3,5" external 3,5" or 2,5" external 3,5" internal 2,5" internal 3,5" or 2,5" internal | 3 or 6 (by removing of one or two HDD-cages) - - 10 (5 per HDD-cage) - 4