Summary

This is a set of 10" to 19" rack adapters (1HU). I created simple Adapter plates with cornered holes for cage nuts and round holes for using standard nuts to mount the interface section to the 10" part. The 10" device is meant to be fitted in the middle of two adapter plates (left/right versions).

I even threw in some shelf extensions to hide power supplies behind the adapter plates. The little opening in the front of those is meant for powercables and such.

The Shelves provide some slots for Zip ties to fasten cables and/or powersupplies to the shelve.

I added the original Fusion 360 file so you can extend the design to your personal needs.

I have not tested the design yet, but all the sizes check out. It should fit most setups, if the products used followed the specs for 19" and 10" equipment.