Increases system performance Compatible with Mac systems Every single module extensively tested at the component and module level for functionality Meets or exceeds Apple’s own quality requirements Easy installation Available in DDR2 and DDR3 SODIMMs in capacities up to 8 GB DDR3 modules include lead and halogen-free technology
Module Size: 8GB Kit (4GBx2)
Package: 204-pin SODIMM
Feature: DDR3 PC3-8500
Specs: DDR3 PC3-8500 , CL=7 , Unbuffered , NON-ECC , DDR3-1066 , 1.5V , 512Meg x 64
Lifetime warranty. Scroll down to see compatible models. Please, make sure your Mac supports 4GB DDR3 ram, 1066MHz speed.How to find memory spec. on your Mac?On your Mac screen find and click Apple icon located in left hand side upper corner and chose ” About this Mac “. Click ” More info “. In the Contents section on the left side of the screen, click ” Memory ” See memory type and memory speed- make sure, yours is DDR3, 1066 MHz.