Brand: Realistic
There is no such thing as a "Realistic RS220 E." The RS220 E is a specific model of a remote system console from IBM, designed to manage large mainframe computers. "Realistic" typically refers to a simulation or emulation of a system, not a physical hardware product. If you're looking for a way to simulate or emulate an RS220 E console, you should search for software products that offer this functionality as part of larger IBM mainframe emulations or vintage computer simulations.