I bought this to use with Monoprice 6311 cable in Arlington recessed wall boxes but the cable was so stiff that I could not make the bend in the box. I ended up cutting out the back of the box to get it to fit. This would not be allowed if 110 AC was also in the box.
They were unusable. That is, they didn't work. At all. They did not make a reliable connection (sort of worked for audio, not at all for video). Tried two units thinking one was just a lemon but neither worked. Wasted the whole morning on the project and have nothing to show for it but holes in the wall where these worthless wall plates were supposed to fit.