...and for those who follow after this solved problem: Back when "no serial port" was a new problem, I watched as people solved it. There was unanimous agreement that the Keyspan USA-19HS, also known as the Keyspan Serial Adaptor (they had only one model and probably still do) works in all circumstances. I've found that to be so except for occasional needs to futz with the entire system when doing a URC MX850, and frankly I think the remote is the problem there.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
