I have had the N66U for several years and it's been fantastic, but a couple of weeks ago some of my wired (we only have a few) devices stopped working - and when I checked the router, I could see that only one wired connection was receiving an IP address. After several days of troubleshooting, restarting/rebuilding the router settings, changing cables and other frustrations, I finally decided just to switch the ports, and voila - the problem is confirmed that ports 2&3 on the router are...
RT N66U - Bad Ethernet Ports
RT N66U - Bad Ethernet Ports