... supplyHarddisk160GBExtended interfaces1 VGA, 1 DVI ,4 USB ,1 LAN ,1 TVOUT ,2 COM ,built-in speakertouch all-in-one computerhardware configuration can ... size liquid crystal touch screen,High-quanlity built-in speaker, reappear the verisimilar multimedia,carton effects. ... and environmental protection,Safety and stabilization:particular built-in power supply.main machine, radiation,electric shock,leakage ...