I added this to an existing powerline network (running 6 of the 200Mbps standard TP Link Units)
Wireless is easy to configure.
Took a couple of attempts to pair it onto the powerline network, but that's probably just me.
Wireless range is OK, not huge, but it means that the far end of the house is not bereft of wireless anymore.
Set up using a seperate SSID, and secured using WPA PSK2.
You can also set MAC address filtering too if you wish (I normally do, but haven't on this one).
It also has a normal Cat 5 socket to plug in a network cable if you want.
Button can turn wireless on or off.
A little bit more range would have made it 5 stars, but then that could just be the physics of the location!