I tried the demo first and was glad to spend $10 for this slick interface. Basically, everything worked perfectly. Especially for streaming video. The picture on my 55” 4k Sony from my late 2001 2.5ghz MacBook Pro 17' is excellent! It would be even better if there was no lag for surfing or working in apps, but I could hard wire for that. It a simple automatic connection that is easy to select, without changing any settings on the tv, no matter what source I was using, and it’s up and running in seconds. At the drop of a hat, at any time I can put it up on the big screen. Bam! It works! What’s to complain about? I got over the 2-3 second lag real quick! All I can say is that it has been flawless the dozen plus times I have used it, even hours at a time, pausing or doing whatever I chose. Good job, guys! Thanks!