@AviHarari HI, thank you for your reply. I found the problem, a faulty cable between the switch and the TP access point. Replaced the cable and is is working now. Thanks again.

Hi, I'm using an Apple Airport Extreme as a router, and trying to add a TP-WA801N access point to better the coverage. From some reason I'm unable to get it to work. The connection between the two is...