MacBook Pro: How to remove or install memory - Apple Support
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro (Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
Macbook Pro Mid 2012 SSD Upgrade - YouTube
Mid 2012 13" inch MacBook Pro A1278 Disassembly RAM SSD Hard Drive Upgrade Repair OSX Install - YouTube
Install memory in an iMac - Apple Support
Memory RAM Upgrades for MacBook Pro (2012 - Late 2016)
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro (Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
Best Buy: Apple MacBook Pro 13.3-inch 500GB Intel Core i5 Dual-Core Laptop (MD101LL/A) Mid-2012 Pre-Owned Silver A1278
Mid-2012 Macbook Pro 16GB RAM Upgrade How To - YouTube
Review: Is the 2012 Macbook Pro Still Worth in 2021? | by Fahmi Nurfikri | Thoughtful Shower | Medium
Macbook Pro MD212LL A Specs (Retina, Mid 2012), 13 inch Apple laptop [A1425 (EMC 2557), Core i5 2.5 GHz, 10.2, BTO/CTO] | Techable
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro (Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com