Photos of the mystery computing device appeared on the web in late February. Taken with a smartphone, they were a bit washed out and a little blurry in places, but you could easily read the name printed on the long, thin piece of hardware. “Pluto Switch,” the label said.

The images were posted by two men who said the device had unexpectedly turned up at a branch office in the tiny farmland town of Shelby, Iowa — population: 641 — and they were hoping someone could tell them what it was.

Clearly, these two men were familiar with the ins and outs of computer networking, and clearly, this was a networking switch, a way of shuttling data between machines. But they’d never heard of the Pluto Switch, and it was littered with networking ports they’d never seen before. “Any ideas?” they asked. “The writing on the back is Finnish.”