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 (16GB kit (2 x 8GB)) at Amazon.com
A-Tech 8GB RAM Replacement for Samsung M471B1G73EB0-YK0 | DDR3/DDR3L 1600MHz PC3L-12800 2Rx8 1.35V SODIMM 204-Pin Memory Module at Amazon.com