32GB KIT (4 x 8GB) For Apple iMac Series 2.93GHz Intel Quad-Core i5 - (27-Inch) (Late 2012) 3.2GHz Intel Quad-Core i5 - (27-inch) (Late 2012) 3.2GHz Intel Quad-Core i5 - (27-inch) (Late 2013) 3.4GHz Intel Quad-Core i5 - (27-inch) (Late 2013) 3.4GHz Intel Quad-Core i7 - (27-Inch) (Late 2012) 3.5GHz Intel Quad Core i7 - (27-inch) (Late 2013). SO-DIMM DDR3 NON-ECC PC3-12800 1600MHz RAM Memory. Genuine A-Tech Brand. 32GB KIT (4 x 8GB) SO-DIMM DDR3 NON-ECC PC3-12800 1600MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Apple iMac Series. (See Compatibility List Below)