@terziyski do you think sending it back and getting another may resolve the issue?

have tested with cable tester and its fine, have also connected the cable to laptop and TV to check and both work, its just the 901n that is having the issue?

I have a wa901n which I am using as a WAP, I have run a cat5 armoured cable (approx 50 meters) to an out building which is connected to my router, I am using the POE (i have also tried without the...