I don’t know much about networks and wifi, but I am trying to understand how my home internet is set up. Everything is working fine, I am looking into buying new wifi pods (potentially the google mesh network stuff) instead of leasing them from my isp.

I have fiber internet from Midco and I have attached my best understanding of what’s going on. My biggest confusion is that on the switch there are 4 cables plugged in. I am guessing 1 is an input and 2 go to my other ethernet ports in my house. What are the 4 cables into my switch and what would I need to get to replace the isp wifi pods. Thank you.