Xbox-ITX
This is a basic kit for allowing the non-destructive conversion of an original Xbox to a Mini-ITX based PC. Using this you can mount USB plugs in the controller's ports, an HDMI port where the video adapter originally went, mount the Mini-ITX motherboard on the original Xbox mounting holes, and use the original power hole on the case.
Note: Models MIGHT be in meters instead of millimeters, if you run into any issues with slicing, scale it by 1000.
Parts list: https://pastebin.com/vtTefUFF