TP-Link Powerline WiFi Extender - Add-on Single Adapter, Ethernet over Powerline, Plug & Play, Compatible with all TP-Link powerline adapters with different speed, AV600 with N300 WiFi(TL-WPA4220)
Amazon.com: ZyXEL 500 Mbps Mini Powerline AV Ethernet Adapter (PLA4201) : Electronics
Zyxel 600 Mbps Mini Powerline AV2 Gigabit Adapter, Starter Kit - 2 Units (PLA5205KIT)
Amazon.com: D-Link Powerline Adapter Starter Kit Ethernet Over Power Gigabit AV2 Up to 1000Mbps MIMO Internet Network Wall Plug In (DHP-601AV) : Electronics