The 500Mbps Compact Powerline AV Adapter Kit, model TPL-406E2K, uses any electrical outlet to create a secure high speed network. Connect the first adapter to your network and plug the second adapter into any outlet on your electrical system for instant high speed network access. The compact form factor saves space around crowded electrical outlets. This adapter automatically connects to other TRENDnet Powerline AV adapters with no installation required-TRENDnet recommends pressing the #39; #39;Sync #39; #39; button to automatically change default encryption keys. Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.