Otto, they claim they support HDCP. I have to admit being surprised that they haven't been "asked" to discontinue the unit since it is supposedly in violation of the HDMI adopters agreement. However, if the accuracy of the specification is correct, then it should work (and it is what these devices should be used for IMHO). Really the big issue with these cheaper boxes is picture quality including shifting of the picture.
There are other better known devices such as this that cost more and have a reputation of providing very good picture quality. Unfortunately most of those are no longer available as new devices except on their own overseas website. There is often a fury of activity (hint, hint).