This is what I meant. Its kinda like the little lip on the car phone holders. It lets a lot of the weight rest on the lip which pulls from the multiboard attachment itself and not the usb connection. I apologise for the rudimentary 3d modeling, I just started learning this stuff again and this is the best I can do.
The author remixed this model.
Added a adjustable lip/cantilever to hold the weight of the device instead of just on the usb connection.