8GB (2x4GB) Samsung 4GB PC3-12800 M471B5173DB0-YK0 SoDimm B-12 - All Things Surplus
Amazon.com: Samsung ram Memory Upgrade DDR3 PC3 12800, 1600MHz, 204 PIN, SODIMM para Apple MacBook Pro 2012, iMac y Mac Mini 2011/2012 (8 GB (1 x 8 GB)) : Electrónica
Samsung ram Memory 8GB kit (2 x 4GB) DDR3 PC3-12800,1600MHz for 2012 Apple MacBook Pro's, iMac's and 2011/2012 Mac Mini's at Amazon.com