Apple MacBook Pro A1278 (Mid 2012) 13.3" Laptop 8GB RAM, Storage options. Grade A
CMS 16GB (2X8GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® MacBook Pro Core 2 Duo 2.66 13" Mid-2010 - A15 at Amazon.com
Old MacBook Pro repair. Back when you could upgrade the SSD and Ram! : r/mac
What is the RAM size of a MacBook Pro A1278? - Quora
Mid 2012 13" inch MacBook Pro A1278 Disassembly RAM SSD Hard Drive Upgrade Repair OSX Install - YouTube
A-Tech 8GB Kit (2x4GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
A-Tech 8GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com
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
Pure Beauty & Nostalgia: Apple Macbook Pro 9,2 (A1278) Mid 2012 running GNU Linux like a Pro (the perfect combo that just works) | dwaves.de
2010 Macbook Pro 13" A1278 RAM Upgrade - YouTube
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com