Inwin IW-PE715 GPU workstation chassis designed for content creators with highly expandable structure and efficient thermal performance.Specifications: M/B Compatibility : CEB,ATX,Micro-ATX ,Mini-ITX Expansion Slots: PCI-E x7 Vertical PCI-E x2 , VGA card length : 400mm(maximum) (Length up to 7x 400mm slots when removing 3x 3.5" HDD cages) VGA card width: 170mm(maximium) CPU heatsink height : 166mm(maximum) I/O Ports: 1x USB 3.1 Gen2 Type-C; 2x USB 3.0 ,HD Audio, External Drive bays: 2x 5.25", Internal Drive bays: 6x3.5", 2x2.5", Thermal Solution Compatibility: Front : 2x120mm fan or 240mm radiator (must remove 3.5" drive cages Top: 2x 120mm fan/120mm radiator .Case Only no PSU, Power Supply Compatibility: PS2, ATX12V (length up to 220mm), InWin CRPS PSU (require to remove bottom 3.5"" drive cage).