Manufacturer: Allen-Bradley / Rockwell AutomationProSoft Technology 5202-DFNT-MCM4 EtherNet/IP to Modbus Master/Slave Gateway 4 Port, 1 x RS-232 Configuration Serial Port , 1 x RJ45 Ethernet Port, 4 x Modbus Application Serial Ports , 24V DC Power, DIN Rail Mount, Provides a Single Ethernet Port and Four Modbus Serial Ports