The model might need support depending on your demands in quality.
I figured that because the stand is hidden behind the controller, the quality of the print is secondary as long as it does what it's suppose do.
Version 3b definitely needs supports, but is also a better fit and a bit more stable.

The onshape-link: https://cad.onshape.com/documents/c1271c8298f014594e542555/w/66be8b5b8efb196805dbe1cb/e/5605620c99d1936a60f839be?renderMode=0&uiState=695ec1403cef3c69fcc9b6b9