Stop Gatekeeping. Most of that equipment is still good for learning new concepts on, especially the Dell x20 servers.

Where are these located?

There are things that real server hardware does fasger/better, but there is no reason why old gaming hardware can’t be a fileserver, router, firewall, gateway, etc… It’ll do Just Fine ™ at it for home use.

My firewall (opnsense) does this… With very little configuration. Using UnboundDNS with its block list features makes filtering most ads out rather easy.

Without a banana for scale, or at least a potato, it’s impossible to tell if this is an air tag or a salad spinner or a spaghetti containment and distribution mechanism.