You choice of color and window style. Available in black or silver with clear window or mesh vent design side panel. High-end brushed aluminum panel with aluminum body, ultra-light, 3d id front panel with blue led illuminative effect , enhanced strength rear plate with nickel coating , four foldable feet for extra support to chassis , built-in one blue led illumined silent intake fan with filter , built-in two blue led illumined silent exhaust fans , support liquid cooling system with pre-modified dual tube outlets , unique side panel design for great ventilation , aluminum body absorb heat 4 times faster than steel , specification: front bezel material aluminum , dimension 5 , expansion slot 7 , system fan(front) 120 mm silent blue led fan x 1 , 5.25 Drive bay (external) 5 , net weight 17 lbs , compatible mother board atx / micro atx , i / o ports usb 2.0 X 2 / ieee 1394 x 1 / hd-ac97 audio x 1 set , body material aluminum , color silver / black , side panel / choice elegant mesh vent design (ans/anb) , / transparent window design (ats/atb) , system fan (rear) 120 mm silent blue led fans x 2