If you like that look — and we'd venture most do — then you have the aluminum iMac from mid-2007 to thank. Apple's mid-2007 iMac brought big changes to the product line. First up was ...

Before we get to that 2012 event, we need to roll the clock back a little further to August 2007, when Steve Jobs unveiled the first ... Memory is not removable by users on iMac (21.5-inch, Late 2012) ...