Manufacturer: Allen-Bradley / Rockwell AutomationProSoft Technology PLX51-DF1-ENI DF1 Routing Module, 1 x 10/100 Mbps EtherNet Port (RJ45), 1 x RS-232 (DF1) Port, 10-28V DC Power, provides EtherNet/IP connectivity for SLC 500, CompactLogix and MicroLogix controllers, as well as many other DF1- enabled devices