Guaranteed Lifetime warranty from Purchase Date and Free technical support based on United States. Supports CPU Processors: 2.5 GHz Core i5, 2.7 GHz Core i5, 2.9 GHz Core i5, 3.1 GHz Core i5, 3.2 GHz Core i5, 3.3 GHz Core i5, 3.4 GHz Core i5, 3.5 GHz Core i5, 2.8 GHz Core i7, 3.4 GHz Core i7, 3.5 GHz Core i7, 4.0 GHz Core i7. Model Number: A1311 A1312 A1419 - Part Number(s): MC309LL/A, MC812LL/A, MC813LL/A, MC814LL/A, MD063LL/A, MD095LL/A, MD096LL/A, ME088LL/A, ME089LL/A, MF125LL/A, MF886LL/A, MF885LL/A, BTO/CTO. Compatible with Apple iMac – 21.5 inch / 27 inch Mid 2011, 27 inch Late 2012, 27 inch Late 2013, 27 inch Late 2014, 27 inch Mid 2015- iMac12,1 iMac12,2 iMac13,2 iMac14,2 iMac15,1. DDR3L 1600MHz PC3L-12800 204-Pin Unbuffered Non ECC 1.35V CL11 Dual Rank 2Rx8 based 512x8 Module Size: 80GB KIT(10x8GB Modules) Package: 10x8GB.