Updated: Jul 15
The projectors attach using three M3 bolts. Screw in the bolts into the projector, but not too deep. Fit the projector into the holes provided in the bracket and move the projector to the side. Tighten the bolts.
The front and back projector brackets work in the same way. If you do have the super speed add-on you will need to move the front and back projector left/right in the gap so that the images align and then tighten the bolts.