Just following up: The Decklink Studio Card works on a gateway computer that I bought. However, the Datavideo CG100’s security dongle will not work on a 64 bit machine. With that being said, Datavideo worked with me to solve the problem. They exchanged the CG 100 software for the CG 350 software and it works perfectly. I have to really praise the Datavideo people because they really did not have to do what they did…. or at least they could have taken their sweet time to do it. My problem was taken care of with one phone call and about 4 emails. Great service support!!!!