19" touch screen pc all in one Material:Aluminum,steel 4wires/5 wires resistives ... 2GB),320G HDD VGA,USB,HDMI Bracket(optional)WIFI(optional)Aluminum bezel,motherboard with fan,good coolingpolishing, sand blasting, wire drawing, electrophoresis ... RJ-45 port 1 x com (RS232)port 1 x WIFI connector (optional) DC connector port for miccrophone and for earphones ...