Productivity1000 P1-550 PLC CPU Modules, 5 Ports (USB, Ethernet, RS-232, RS-485,Remote I/O)
Productivity1000 P1-RX PLC CPU Modules, Remote I/O Modules, 1 Port (RJ-45)
Productivity1000 P1-540 PLC CPU Modules, 4 Ports (USB, Ethernet, RS-232, RS-485)