An ethernet cable is a type of wire that connects devices, like computers and routers, to create a network. It allows them to share information and connect to the internet. Full definition
It promises easy setup by plugging via ethernet cable into your existing router. (slashgear.com)
To do this, plug one end of the included Ethernet cable into the Base Station and the other end into a free Ethernet port on your router. (howtogeek.com)
Otherwise, you connect an included Ethernet cable from the hub's port to your house's router. (tomsguide.com)