Perhaps not, I've had an electrician here putting in powerpoints etc and he was the one that ran the cable stating he did this sort of thing all the time but I had to getthe cable, not a problem, but now that I look really closely at the cable I noticed a small sticker with arrows that seem to indicate signal direction, tried plugging everything in the other way roud, works perfectly, great , not me, not the cable, just the installation, will have a bit of a chat to the sparky tomorrow, thanks to all those that offered solutionsm, am I the first to be caught out by a backward hdmi cable?