Ram stick: https://i.imgur.com/VnQKQih.jpg (this 3200 MT/s stick of micron rev e)
It looks close to A2, but i see a trace on the pin next to the notch that is not on A2, I can’t find a image of A3
* https://community.hwbot.org/uploads/monthly_2019_01/A2.thumb.jpg.438e382663b46008df09e9ae4b182c06.jpg