This is a stand for the Lenovo ThinkCentre M9xxq Tiny series for upright use.
It eliminates wobbling and gives it a firm and save stand.
It might be useful for the other series (e.g. M7xxq and M8xxq) as well. It's designed for a device thickness of 34,5 mm. Otherwise it can be adjusted easily.
The author marked this model as their own original creation.