... USB ,1 LAN ,1 TVOUT ,2 COM ,built-in speakertouch all-in-one computerhardware configuration can be customized Light and handy ... .Healthy and environmental protection,Safety and stabilization:particular built-in power supply.main machine, radiation,electric shock,leakage power ... model.Hardware configuration can be customized and built-in software systemFurther details,please contact our salesmen. ...