home networks use what kind of cable for interface
A network switch is used to allow devices on the home network to talk to one another via Ethernet. While the needs of most home networks are satisfied with the built-in wireless and/or switching capabilities of their router, certain situations require the introduction of a distinct switch. For example:
Also called a LAN adapter, the NIC plugs into a motherboard and provides a port for connecting to the network. The NIC constitutes the computer interface with the LAN. The NIC communicates with the network through a serial connection, and with the computer through a parallel connection.