ZyXEL Powerline AV 500 Mbps 4 Port Gigabit Switch Wall-plug Adapter with PLA4205 Powerline AV 500Mbps (PLA4225KIT) Starter Kit includes: 1 PLA4225 (Powelrine AV 500mbps 4-port Gigabit Switch), and 1 PLA4205 (Powelrine AV 500 Gigabit Adapter) Blazing-fast 500 Mbps speeds for lag-free HD video streaming and gaming Plug-and-play connection for to up to four media devices at Gigabit wire speed IEEE1901 compliant and compatible with HomePlug AV QoS enhances media streaming quality Power-saving mode reduces wasted energy