Would two of these work?
Also, just to be sure, if I upgrade from 4GB to 16GB on my own, will I still be able to reach 32GB on my own (if I so please)?
Those would probably work, but are slower than the memory that comes with it. Also, memory "for Mac" is a marketing gimmick that just costs more for those words.
Two of these would do the trick.
You could still do 32GB, you would just have to order all new memory and replace all four sticks with 8GB sticks.
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