Fractal Design builds on the success of its awarding-winning Define XL computer case with the Define XL R2. This updated chassis carries on the family tradition of providing superb cooling and ventilation capabilities with exceptional expandability, in a sleek and stylish Scandinavian form. The Define XL R2, which includes Fractal Design\'s innovative Modu Vent(TM) feature, has an updated internal layout that offers greater expandability, modularity and flexibility, including capacity for 9 PCI cards and two HDD cages that can be repositioned to provide more space for water cooling radiators. Key features High density noise-reducing material for an optimal silent case Patented Modu Vent(TM) design allowing the user to choose between optimal silence or maximum airflow. With a new internal layout and additional PCI expansion slots, it can harbor the most powerful enthusiast systems. Both HDD cages can be removed or repositioned - Top HDD cage can be removed or repositioned for increased airflow whereas bottom HDD cage can be repositioned further into the case to allow for front radiator mount. The case can fit water cooling equipment in the front, top, rear and bottom without major modifications. Three-speed fan controller is strategically integrated in the front panel and supports up to 3 fans Three Silent Series R2 fans are included, featuring hydraulic bearings which contribute to a longer life expectancy - Silent Series R2 retail fans now come standard in all cases New tool-less front fan holder makes switching front fans a breeze Specifications ATX, Micro ATX, mini-ITX, E-ATX and XL-ATX motherboard compatibility 4 - 5. 25\" bays 8 - 3. 5\" HDD trays - all compatible with SSDs A total of 9 expansion slots 3 - Modu Vent(TM) plates - two in the top and one in the side 7 - Fan positions (3 fans included) Filtered fan slots in front and bottom CPU coolers up to 170 mm tall (when no fan is installed in the side panel) PSU compatibility: ATX PSUs up to 190 mm deep when using th