I made this bracket in FreeCAD so you can mount your Steinberg UR interface under a table.
You will need four brackets.
Information: This Bra-Ket does not require Dirac notation.
For the Steinberg UR44C, the horizontal distance between the holes of the opposite bracket was measured 270 mm. For other interfaces from the UR series, the height of the housing will probably be the same 44.5 mm. The hole diameter is 5 mm. Do not overtighten screws so you do not brack it (pun intended).
Printed in PETG, the model is elastic enough so that the interface can slide in/out under the board. However, there is hardly any clearance under the board, so there might be scratches on the housing if you move it regularly.
For mounting:
Use this model at your own risk :) Make sure, you do not ruin the table by drilling through it from beneath. Please make sure the interface does not fall on your foot, or it will make you sing :)
The author hasn't provided the model origin yet.