What about the two ribbons on the right not attached at the picture?
There are two more small black Philips to be loosened to do this. They are present on the picture.
That is what I have been told, yes.
I have bought 2x4GB Ram, a kit of 8GB for my mac. I see that someone here is replacing with 16GB, how is that when I’ve read there is a maximum of 8 to be used on this machine?