Adding a powerline adapter to an existing powerline network | Answer | NETGEAR Support
Netgear Powerline 500 (XAVB5421) Extend Internet Access To Any Power Outlet | eBay
NeweggBusiness - Netgear XWNB5221-100PAS AV500 Power with N300 Wireless Range Extender Kit, Powerline Up to 500 Mbps + Wireless Speed Up to 300 Mbps - Essentials Edition