As other sellers have pointed out, this is a very poor quality cable. Forget running PoE on this one. Very unstable. Forget Gigabit Ethernet. Cables break so easily. There is very little copper on it which scratches easily exposing another metal. Can't work with this cable, one run lasted 2 hours, the other started showing problems after 1 week. I do not recommend. Don't waste your money on it.