Having migrated to the fiber I wanted to exploit the full potential of my box and as the wifi is ready to eat 15% of the performance I chose to take a cable ETHERNET I do pass through a wall for it going to my office. The cable is long, very white, it is the cat.6, the connectors are robust. After nearly a week of use everything works nickel chrome! I peaked at 96Mbits while with wifi TP-LINK TL-WN822N USB I was at 68Mbits.
Only point of criticism: the cable is not as EPAI the original 2m cable that came with my box and I feel it is not as flexible, but as it works, who cares!