I thought all xboxes were x86 hardware running some variant of windows under the hood?
Edit:
“The Xbox system software is the operating system developed exclusively for Microsoft’s Xbox home video game consoles.[1] Across the four generations of Xbox consoles, the software has been based on a version of Microsoft Windows”
"Though initial iterations of the software for the original Xbox and Xbox 360 were based on heavily modified versions of Windows, the newer consoles feature operating systems that are highly compatible with Microsoft’s desktop operating systems, allowing for shared applications and ease-of-development between personal computers and the Xbox line. "