I purchased an AMP2, a Raspberry Pi 4 and a steel case. No instructions came with the case.
I figured out most of it, but there are 2 small clear plastic cylindrical pieces left over as well as 4 long screws and nuts. I'm assuming the long screws and nuts are to attach the (optional) fan and the plastic pieces are to extend the light from the LEDs out through the case. Not sure how to do this though.