AV 200 Wireless-N Extender Kit (XAVNB2001)

you can have multiple XAVNB2001 connected trough the house using one single conection to your internet gateway, the you can have an AP (XAVN2001) in every floor, or any particular room you need wifi. You can connect any AP to the ethernet port of the powerline adapater there is not limitation, except that if you use a router (with firewall) insetad of a real AP, you will create another subnet in your network, it will slow down your througput in your new subnet, plus you would not be able to connect to other devices in your home in subnet1