Rugged metal case with DIN-Rail/wall-mount 15KV ESD protection for serial signals 10/100Mbps Fast Ethernet full duplex auto negotiation Support multipl link mode with TCP server/client, UDP and Virtual COM mode Monitor, manage and control industrial field devices remotely Configuration: Built-in Web Server /Serial Console/Telnet Windows Base utility for IP configuration Upgrade firmware from remote-PC via Ethernet GW312 device server - 2-port RS 232/422/485 Serial to Ethernet device server, Rugged Metal Case. Easy Configuration. Virtual Com software included. ( Atop )