Attention! 2 cables necessary!

At this bad buy, I'm probably your own fault, because I had time to read the description and the recession should read attentively. Anyway, I was disappointed when I realized that this device requires 2 separate CAT5 / 6/7 cable. Does it indeed has in my test wonderful, but I had planned it. For use on a permanently mounted projector, to which it still would be a free LAN cable, but 2 are too much Of course, the division has a number of stripping also the advantage that the signal can be transmitted any better, but I still think it is a major disadvantage since the conditions of use are for quasi doubled.
As I said, I'm to blame, that I have bought this extender, but I am nevertheless convinced that the 3 stars are justified as 2 cable is too much for an extender just 1.