Valve's leaked Steam Box spells an interesting future for Steam-powered devices
This particular machine, seemingly created in 2017 or shortly after, has some interesting quirks.

Valve has been working a lot of hardware behind closed doors for more than a decade, and the fruit of the company's labor first came into the open with the very first Steam Machines. These were made by partners rather than Valve itself, but they ran SteamOS and served as a console-like interface for gamers to play their Steam games on. Back then, it was cumbersome to get Windows games running on them, and while you could install Windows on one, why would you not just buy a regular PC at that point?