Ram memory upgrade 8GB kit (2 x 4GB) DDR3 PC3 8500 1067MHz 204 PIN SODIMM for 2009 and 2010 Apple Mac mini Module Size: 8GB Kit (4GBx2) Package: 204-pin SODIMM Feature: DDR3 PC3-8500 Specs: DDR3 PC3-8500 , CL=7 , Unbuffered , NON-ECC , DDR3-1066 , 1.35V , 512Meg x 64 Lifetime warranty. Scroll down to see compatible models. Please, make sure your Mac supports 4GB DDR3 ram, 1067MHz 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, 1067MHz.