Airlink APL8512 Powerline Turbo 85Mbps Ethernet HomePlug Adapter At least need a pair to work. 56-bit DES Hardware Encryption with Key management for secure power-line communications Includes user friendly software for setting up security HomePlug 1.0 compliant. Operates on existing home electrical circuit (as long as it is on the same Electric bill). 100% Plug-and-Play, no configuration or software setup needed Data transmission rate up to 85Mbps Up to 300 meters in distance 10/100mbps auto-sensing LAN port Built-in Quality of Service (QoS) and Error Correction features