Carl, thanks for your input. Being relatively unsophiscated in the networking arena, I guess I thought that the Deco would just piggyback on the Airport and extend the Airport network. As I saw...

I just installed a Deco M5 two unit system in my home. Base unit is attached to an Apple Airport Exreme (wifi turned off) which is conneted to a modem via ethernet. When the M5 was installed it came...