The Titan 650 Server Case from Antec is a computer case that is compatible with Extended ATX form-factor motherboards. The case can mount up to six 3.5" hard drives, and four 5.25" external drives. A 5.25" to 3.5" adapter is included, allowing you to use one of the 5.25" bays to house an external 3.5" drive. The case can supply up to 650W of power to internal devices via its supply system. It includes one 120mm TriCool case fan for efficient cooling.