A-Tech 8GB RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
2013 iMac teardowns reveal SSD slots, soldered-in CPU in the 21.5” model | Ars Technica
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
iMac (Late 2012)」27インチモデルのメモリ(RAM)を交換する方法 | ゴリミー
How to Upgrade iMac RAM: 2012-2022: EveryMac.com
Apple iMac Late 2013 21.5-inch 2.7GHz Core i5 Apple DDR3 RAM Memory | Kingston