100 % Ultra-Ligero steel: completely made of ultra-light steel alloy, without plastic front: resistance, lightness and ecology cooling: constant air flow with the lateral air inlet with its 120 mm fan: in addition, its front Metallic helps improve heat transmission to the exterior of passively internal capacity: ALux offers wide internal space, offering support for ATX, microatx and mini -it plates, up to 4 hard drives, and an efficient internal wiring management