Ethernet I/O Upgrade for B4 Brain

Quad Pak 8-module Rack with Header Connector for G4EB2 or B4 Brain

Ethernet I/O Upgrade for G4D32RS Digital Rack

Ethernet I/O 32-Channel G4 Digital OptoMMP Brain, Rack, and Cover

Software-based programmable automation controller for PC-based control, with PAC Project Basic software and documentation in PDF