Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Install memory in an iMac - Apple Support
SSD Upgrade Kits For 21.5 Inch iMac 2012 - 2013
Install memory in an iMac - Apple Support
How to Upgrade iMac RAM: 2012-2022: EveryMac.com
How to Upgrade iMac Hard Drive or SSD 2012-2022: EveryMac.com
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
Late 2013 iMac review: Faster than before, but the gains over previous models are modest | Macworld
iMac 2013 Model Ram Upgrade - YouTube
Apple iMac A1418 21.5" AiO Computer i5-4570R (Late-2013) -
AIRPORT WIFI BLUETOOTH CARD For iMac A1418 A1419 / Mac Pro
Install memory in an iMac - Apple Support
How to upgrade RAM iMac late 2013 21.5inch - break & fix MOVIE - YouTube
Apple iMac 21.5" All-in-One Desktop Computer Core i5-4570R 2.7GHz 8GB RAM 250GB HDD Mac OS Mojave Late-2013 w/ Keyboard & Mouse