Allen Bradley 1756-L72 ControlLogix Logix5572 Processor with 4MB User Memory, 0.98MB I/O memory; 128,000 Digital I/O, 4,000 Analog I/O; 1-USB Port USB 2.0, full speed, 12 Mbps (EtherNet/IP, ControlNet, DeviceNet, Data Highway PlusTM, Remote I/O, SynchLinkTM, Third-party process and device networks)