16GB Memory Upgrade for MacBook Pro, iMac, and Mac mini
parts-quick 16GB 2 X 8GB Compatible Memory for iMac 27" inch 3.2GHz Quad Core Intel Core i5 Late 2013 ME088LL/A 1600MHz DDR3 (PC3-12800) SO-DIMMs RAM at Amazon.com
Crucial RAM 4GB DDR3 1600 MHz CL11 Memory for Mac CT4G3S160BJM at Amazon.com
Memory Upgrades for iMac w/ Retina 5K Display Late 2015
USA 8GB 16GB PC3L-12800 DDR3-1600MHz Memory for iMac 27-Inch "Core i7" Late 2013 | eBay
NEMIX RAM 16GB (2x8GB Upgrade Kit) DDR3-1866 SODIMM Memory Compatible with Apple iMac 27" Late 2015 with Retina 5K Display at Amazon.com
32GB kit 4x 8GB PC3-12800 DDR3 1600MHz RAM for Apple iMac 204-Pin SODIMM Memory | eBay
CMS 32GB (4X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core I5 3.2 27-Inch (Late 2013) Me088Ll/A - A6 at Amazon.com
Timetec 16GB KIT(4x4GB) 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
Timetec 8GB Compatible for Apple DDR3L 1600MHz PC3L-12800 for Mac Book Pro (Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
Adamanta 32GB (4x8GB) Apple Memory Upgrade DDR3/DDR3L 1600MHz PC3L-12800 SODIMM Compatible for Mid 2015 Retina 5k, Late 2014 Retina 5k, Late 2013, Late 2012, Mid 2011 iMac 2Rx8 CL11 1.35v RAM at Amazon.com
4GB DDR3 PC3-12800S-11-10-F3 1600 MHz Suits Apple iMac 27, 21.5, MacBook Pro | eBay