19" touch screen pc all in one Material:Aluminum,steel 4wires/5 ... optional)Aluminum bezel,motherboard with fan,good coolingpolishing, sand blasting, wire drawing, electrophoresis, spraying, oxidation, screen printing,Oxidation wiredrawing processing.The motherboard ... Brightness:400 cd/m2 Touch screen:4-wire resistive usb2.0 (can be build 5-wire,SAW touch or IR touch)Parameters of the motherboardCpu ...