I made this model to support the cables under my desk and keep them off the floor. I stepped on/kicked out too many cables before and it was becoming bothersome. Please excuse some of my cruddy cable management pictures but honestly it is now WAY better than it was before! :D

This model does NOT need supports if printed on its side. 

15% infill works just fine.

0.20mm printing or less will work. 

When loading the STL you might get an error saying it was made in meters, don't worry, just a side affect of my lack of Blender know how. The size is small and fits in the palm of your hand without issue. 

For fastening the Cable Management Hook to the bottom of the table/shelf it is best to use small screws. I modeled this after the screws found here (Not an affiliate link).