Much simpler than sourcing and jury rigging some components into a usb interface. You’d need to set up some scripting for that anyway.

You could do it with a bash one liner

...while also keep a number of network devices always connected, reachable and correctly configured.

Have one router break or someone disconnect one cable and your servers will power down.

"simple".

That's not hard to do, for some networked devices that step amounts to just plugging it into a power source and connecting it to the network. I haven't had to touch the configuration of my wifi printer for example since I plugged it in to the wall years ago.