Linksys PLTS200 PowerLine 4-Port Network Adapter Use your existing powerlines to network your computers and other devices Share files, printers, storage, and networked games throughout your home  connect it to a router to share your Cable or DSL Internet connection Built-in 4-port Ethernet switch HomePlug 1.0 with Turbo technology for data rates up to 85Mbps*, also compatible with HomePlug 1.0 devices 56-bit encryption keeps your data secure