Hello, I just purchased my first house and it has a cabinet of spaghetti in the office and I don’t know what it’s for or how to use it. But it does look expensive so if I can make it useful to me then I’d like to!
You could replace switches with cheap 2.5gbe switches, and even if a room doesn't have ethernet, you could use moca adapters, and leverage the coax cables for ethernet connections.
You'll probs want to put your router and/or cable modem in there too.