TRENDnet 500 Mbps Powerline Ethernet AV Adapter Kit TPL-401E2K (White): Electronics for $78.21 + free shipping
The 500Mbps Powerline AV Adapter Kit, model TPL-401E2K, uses any electrical outlet to create a secure building-wide high speed network. Connect one of the included adapters to your network, and plug the other in to any outlet on your electrical system for instant high speed network access.
Connect the included adapters quickly using the convenient one-touch Sync button. Use up to 16* adapters to network devices in different rooms without running new cabling.
A Gigabit Ethernet port on each adapter maintains high performance wired connections. Manage the Powerline adapters with the included Windows utility. LED displays convey device status for easy troubleshooting. Advanced 128-bit AES encryption secures your network. The included adapters are ideal for use in buildings that interfere with wireless networking signals.