Why is there no "Memory" button in "About this Mac"?
If your Mac has user upgradeable RAM, you will see a "Memory" button in "About this Mac".
If you Mac does not have user upgradeable RAM, you will not see the "Memory" button in "About this Mac".
If your Mac has user upgradeable RAM, you will see a "Memory" button in "About this Mac".
If you Mac does not have user upgradeable RAM, you will not see the "Memory" button in "About this Mac".