From Around the Web: 20 Awesome Photos of Acheter des abonnés youtube
http://angelofyhz018.image-perth.org/4-dirty-little-secrets-about-the-acheter-des-abonnes-youtube-industry
Even cables with developed-in repeaters normally let for an external power source to become hooked up. That is just a bit excess protection in your sign and could be a good suggestion depending upon the situation