... one sound input, one sound output)Network Interface10/100Mbps high speed Ethernet network (wireless network card optional)USB port4 units or ... , ME, NT, etc Widely applied to different fields, simplify user operation, such asPOS cash registers, food & beverage order dishes, ... transport, office automation, etc. 15"Rugged Aluminum Touch POS Terminal/Thin Client POS Terminal with VFD customer display