Directly connected devices use an Ethernet patch cable, usually unshielded twisted pair. These cables can be purchased with the RJ-45 connectors already installed, and they come in various lengths. Recently constructed homes may have Ethernet jacks already wired in the walls of the home. For those homes that do not have UTP wiring, there are other technologies, such as powerline, that can distribute wired connectivity throughout the premises.
Click each wired technology for more information.