MacBook Pro 13" Unibody A1278 (Mid 2012) RAM Upgrade Kit
2GB Black Diamond Memory Module for Apple MacBook Pro A1278 (13.3" Core 2 Duo 2.4GHz) DDR3 SO-DIMM 204pin PC3-8500 1066MHz Upgrade System Specific Memory - Newegg.com
8GB 2X4GB Memory RAM for Apple MacBook Pro A1278 (13.3" Core 2 Duo 2.4GHz) 204pin 1066MHz PC3-8500 DDR3 SO-DIMM Black Diamond Memory Module Upgrade - Walmart.com
Apple MacBook Pro 13" Laptop A1278 Late 2011 i7-2640M 2.8GHz 8Gb RAM GRADE A » eRecycler Online
CMS 8GB (1X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® MacBook Pro Core I5 2.4 13.3" Md313Ll/A A1278 - A14 at Amazon.com