New Lower-Cost 2014 iMac Teardown Reveals Memory Not User-Upgradable
Adamanta 16GB (2x8GB) Compatible for MacBook Pro (Early/Late 2011, Mid 2012), iMac (Mid 2011, Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini DDR3L 1600MHz SODIMM Memory Upgrade at Amazon.com
How to Upgrade RAM on MacBook Pro, iMac & More | AVG
Memory in New $1099 iMac is Soldered and Not Upgradable - MacRumors
iMac Retina 5K: Memory upgrade (RAM)
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How to Upgrade iMac RAM: 2012-2020: EveryMac.com
Timetec 32GB KIT(4x8GB) Compatible for Apple DDR3L 1600MHz PC3L-12800 CL11 for iMac (Mid 2011, Late 2012, Late 2013, Late 2014 Retina 5K, Mid 2015 Retina 5K) SODIMM Memory Module MAC RAM Upgrade at Amazon.com