Microsoft was previously working on a console that would stream Xbox games through the cloud. It was codenamed Keystone but it will likely never see the light of day. However, a patent of Keystone was uncovered and it shows what it could have looked like.

Found by Windows Central, the patent was filed in 2022. It shows the Keystone's potential shape and internal functions. It looks to be about half the size of an Xbox Series S, being a square with a large circular vent, just like the Series S has. It's reminiscent of the first PlayStation console, which had its disk drive on the top.

The front has both the console's power button as well as a USB-A port, while the back has ports for HDMI, ethernet, power. There's also what looks like a pairing button for the Xbox controller.