modem

Hello all, I had this concept in my head for a while and finally found a good tech-savvy community to bounce ideas/questions off of. The Wii essentially has an an entire Gamecube inside of it, and with the controller and memory ports, it can do ALMOST anything a Gamecube can. Except use of the...

I am thinking of buying a something for my room for wired connections to my PS4, Raspberry Pi and other things. I know some stuff about how routers and modems work, but do I need a modem if all I am using is ethernet wired connections?