Stack effect design with 90-degree rotated motherboard layout and Innovative 11.3° forward tilted GPU placement Supports up to XL-ATX and SSI-EEB motherboards and dual power supplies Three Air Penetrator 184i PRO fans included with support up to 540mm (triple 180mm) radiator Other radiator sizes supported: 120mm, 140mm, 240mm, 280mm, 360mm, 420mm, 480mm, 560mm Push button design for easy side panels removal and adjustable bottom fan bracket for increased airflow Includes PCIe 4.0 riser cable