Installed behind my FreeBox, this product is super efficient. Before I used the WiFi Freebox and a Netgear WN802T bridge interconnected RJ45. I lost the signal in several places in my apartment. AirPort Extreme took the place of the bridge Netgear WN802T, I cut the Freebox WiFi (AirPort Extreme can not be configured as a bridge FreeBox) and I signal everywhere (and a good signal).
For cons, the documentation is non-existent. I managed my configuration (AirPort Extreme + FreeBox with two private NAT network and a guest network) that by searching the net: discussion forums + Apple support.
