I have tried the port with no success. I am using an emitter with the master codes from Integration Designer with no success either. I have tried to learn the codes with the IR Pro from RTI with no success. I have read on this site and others that this particular box (Cisco RNG-200) IR tolerance is very low and the way the IR Pro averages the IR codes when you learn them it wont work. Just trying to find a solution instead of replacing every one of those boxes.