Crucial 16GB 2x8GB PC3-12800 DDR3 1600MHz RAM for MacBook Pro 13" Mid-2012 A1278 | eBay
A-Tech 8GB RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz SODIMM PC3-12800 204-Pin SO-DIMM Memory Upgrade at Amazon.com
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
17-inch MacBook Pro Mid 2010 Memory Installation Video - YouTube
Mac Compatible Memory | High Performance RAM | Crucial.com