Sure the G07 is a 7″ screen that has 5 expansion slots on the back of it, if you go up to the G12 and G15 series they both have 8 expansion slots on the back of them.
Is this what you were asking?
Red Lion has 26 modules grouped in 4 different categories that can expand their G3 and Graphite series HMI’s. A Crimson Control module, (8) PID Control modules, (12) DATA Acquisition modules, and (5) communication modules. You can also get 1 of (5) different expansion Racks for additional control and monitoring.