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The Brainboxes ES-420 1-port RS422/485 PoE Ethernet to serial device server with fast Ethernet technology is rail-mountable and features user-friendly interface that is simple to use and delivers powerful operation. It comes with serial port tunneling that allows serial cable replacement over any distance and supports data rate from 110 - 1000000 baud. It features full duplex, half-duplex autogating Tx/Rx modes and has DB9 9 pin male connector. This device server offers maximum operating distance of 4000' and is compatible with Communicate with Microsoft Windows 10/8/7/Vista/XP 2000 operating systems.