Samsung ram memory upgrade DDR3 PC3 12800, 1600MHz, 204 PIN, SODIMM for 2012 Apple Macbook Pro's, 2012 iMac's, and 2011 / 2012 Mac mini's (8GB kit ( 2 x 4GB )) Module Size: 8GB Kit (4GBx2) Package: 204-pin SODIMM Feature: DDR3 PC3L-12800 Specs: DDR3 PC3L-12800 , CL=11 , Unbuffered , NON-ECC , DDR3-1600 , 1.35V Lifetime warranty. Scroll down to see compatible models below.