Thoughts on the M4 iMac, and making peace with the death of the 27-inch model
The M4 iMac is a nice computer. Apple's addition of 16GB RAM to the basic $1,299 model makes it a whole lot more appealing ...
MacStories5y
The Case of the Late-2012 iMacs
but only on the 27-inch models, as noted by this support article: Memory is not removable by users on iMac (21.5-inch, Late 2012), iMac (21.5-inch, Late 2013), iMac (21.5-inch, Mid 2014), iMac ...