Used to hold headphones. It was redesigned to accommodate desks by clipping onto them. Currently this particular model to clip onto 25mm thick desk. Both part files have been provided to allow the end user to change the clip thickness to accommodate their desk thickness.
Generate Support material for the clip part.
The square cut out and extruded square may need a light filling and sanding to fit correctly, otherwise it should just slot it at what ever 90 degree off-set you prefer.