raoul, I am using, OS X Yosimite version 10.10.5 Yes, my projector is working with my Mac. It recognizes it when I connect using USB, and projects exactly what is on my screen. I want to be able to go "live" where my Mac can project but still keep the screen where my programmed service is created. I think that may be called dual monitoring, but not sure. I have checked my Mac and it is supposed to support dual monitoring, but may need some kind of adapter.