aluminum alloy materials with fashion metal shell design ,MapleTouch Five-wire Resistive Touch Screen, ... , one sound output)Network Interface10/100Mbps high speed Ethernet network (wireless network card optional)USB port4 units or moreRS232 Port2 units ... machines, retail, transport, office automation, etc. 15"Rugged Aluminum Touch POS Terminal/Thin Client POS Terminal with VFD customer display