Industrial Serial Port Connecting Server with 16 Serial ports and 1 Ethernet port. New version NP3116T-16D(3IN1). NP3016T-16D (RS-232/485/422)-P(85/265VAC) is a serial port connecting server that can provide serial device with network connectivity. It provides 16 RS-232/485/422 (RJ45 connector) ports and 1 10Base-T/100Base-TX Ethernet port, which allows the scattered serial devices and hosts to be centrally managed in an easy and convenient way ..