Data Sheet TTC RCX-205 2-Port Remote CAIS Bus Expansion Card Data Sheet Download Resource The file you are trying to access requires you to be logged in as a registered user. Registration is free, sign up today. Username Enter your Curtiss-Wright Defense Solutions username. Password Enter the password that accompanies your username. Forgot password? Don’t have an account? Register here. The RCX-205 card provides two (2) additional CAIS Bus expansion ports for a CDAU/EDAU-20XX Master Unit.