Thanks Kevin, I *think* I've isolated the issue. When I plug in the 3rd adapter, everything is fine. Once I plug in a device, in this case my ubiquiti AP, the whole network falls apart. Not sure why...

Hi all, I've been using a pair of TL-PA9020 with no issues. I just bought a 2nd set, tried to add a 3rd adapter into the network, the entire network (wired & wifi) falls apart. I paired the new...