Yeah, one is a switch. The patch panel basically is just for organization. All the equipment in the rack and all the house runs all plug into the back of the patch panel and then the short cables allow you to more easily plug them into the switch. Its definitely not necessary, but it helps maintain the space.

And that one random device on top is the router. Maybe one day I’ll upgrade to a better one, but this one handles everything great. Its just too small to be worth mounting. Kinda like the Pi sitting on the UPS.