Newest generation 4-port serial port server with redundant network port from Atop. The redundant network port ensures the network connection in error and cable break with a shift time from port to port of 200 ms. Eth4ser-A-I is a serial port server for Ethernet network, for example. local area and / or internet. The dual network port with Auto Fallback continues to ensure operation of less than 200 ms if one of the network connections fails. The serial ports are set as RS422 or RS485 with speed up to 921.6 kbit / s. The ports can each be set up in different ways; eg. Can serial port 1 set to Virtual COM Mode, serial port 2 for TCP server, serial port 3 for TCP client and serial port 4 for UPD mode. Eth4ser-A-I has 2 kV isolation on the serial ports, but has only RS422 / 485 ports and screw terminals instead of DB9 connector