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
Amazon.com: OWC 32GB (4 x 8GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Compatible with 2011-2015 iMac Models : Everything Else
Ramjet 4GB DDR3-1600 PC3-12800 DDR3 1600Mhz SO-DIMM for Apple iMac (1x 4GB) at Amazon.com
Amazon.com : Apple iMac 27" Desktop with Retina 5K display - 4.0GHz Intelquad-core Intel Core i7, 1TB Fusion Drive, 16GB 1600MHz DDR3 SDRAM, R9 M290X 2GB GDDR5, Mac OS X Yosemite, (
Ramjet 32GB DDR3-1600 PC3-12800 DDR3 1600Mhz SO-DIMM Kit for Apple iMac (4X 8GB) at Amazon.com
Corsair CMSA8GX3M1A1600C11 Apple Certified 8 GB DDR3 1600MHz (PC3 12800) Laptop Memory 1.35V at Amazon.com
Crucial 8GB Kit (4GBx2) DDR3/DDR3L 1066 MT/s (PC3-8500) SODIMM 204-Pin Memory For Mac - CT2K4G3S1067M at Amazon.com
A-Tech for Apple 16GB Kit (2x 8GB) DDR3 1600MHz PC3-12800 204-pin SODIMM MacBook Pro (Mid 2012 13”/15”), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015, 21.5”/27”, Retina 5K) Memory RAM Upgrade at Amazon.com
16GB Kit 8GB X2 1866 Mhz Apple iMac 5K Late 2015 iMac17,1 PC3-14900 Memory Ram - Newegg.com
parts-quick 4GB Memory for Apple iMac 27-inch (Late 2013) 1600MHz DDR3 SO-DIMM RAM Brand at Amazon.com
Corsair Apple Certified 16 GB (2x8 GB) DDR3 1600MHz (PC3 12800) Laptop Memory 1.35V at Amazon.com