I have a desktop, house phone, printer, scanner, and fax connected to a switch by ethernet. The switch is connnected to a router. All these devices have internet connection. Also, A printer, computer, cellphone, and TV are connected with wifi. I had no idea how things were sent from place to place using the internet, and finding out things travel in packages through light was surprising. I would want other people to know what ethernet is and how it can be used.