MacBook Pro: how to remove or install memory – Apple Support (UK)
2012 Macbook Pro 13" A1278 RAM Upgrade - YouTube
MacBook Pro A1278 Upgrades – UKSL MacLab
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
MacBook Unibody Model A1278 RAM Replacement - iFixit Repair Guide
Apple MacBook Pro A1278 SSD and RAM Upgrade - YouTube
Old MacBook Pro repair. Back when you could upgrade the SSD and Ram! : r/mac
mac - What is the maximum RAM size for MacBook Pro Mid 2012? - Ask Different
Ram memory for A1278 MacBook Pro | Memory for MacBookPro8,1 | Ram for 2011 MacBook Pro | Flexx Memory
A-Tech for Apple 16GB Memory Ram Kit 2x 8GB PC3-10600 1333MHz Macbook Pro Early Late 2011 iMac Mid 2010 Mid 2011 Late 2011 Mac Mini Mid 2011 A1278 A1286 A1297 A1278 A1311