No.... Its RTI and the driver was available and didn't work at all.and now has disappeared from the driver store.. I was on WIFI so that may have made a difference. I tried IP, friendly name etc. NO GO.
Samsung support came back with something about RS232 gets converted after the TV and through the ARC/HDMI connection so we may have to switch to IR...
Samsung had such conviction that what we were doing was soooo weird. :)