I'm using USB extenders to connect from back of Skyview to the panel so I can update and/or record without having to put USB into back of the Skyview. One goes on each outer corner of the two Skyview displays. Cutouts were .5 inch wide and .2 inch high. I also gave some thought to mounting location so the USB drive would not be in the way of any hand movements around the Skyviews or center stack.