I would like to share my experience with the product listed above in order to help other clients in their decision making.
I have deliberately chosen this single 8GB bar because I wanted to keep the option to 16GB RAM in my MacBook Pro 2012er.
According to research in relevant computer forums, it probably makes only a marginal difference whether one uses the RAM dual-slot, or opt for a single slot version.
The delivery of Amazon was, as always, quickly and easily, to have to, I think, do not say much.
The installation also turned out to be quite simple, the old bolt could be solved well, and the new RAM fits like a glove.
I was very surprised at how small such a bolt is actually. ;)
After restarting, the loading times of websites are still low, even copying and moving files is a lot quicker.
As I have often opened simultaneously in the browser up to ten tabs that load times for new tabs have but sometimes suffered. This is now past.
My Macbook has become a lot faster and I have, if necessary, still the possibility a second bolt, the same type and brand use, and use the maximum expansion of 16GB of RAM. But do not think that will be sometime vacant.
All in all I am very satisfied and have spent less than two 4GB bars.