Apple macbook pro 13 inch mid 2012 (Maximum RAM and SSD Dual Storage Upgrade) | eBay
Upgrade Your Macbook Pro (SSD Upgrade, RAM Upgrade, Optical Drive Bay Adapter) YouTube | Macbook Pro 16gb Ram Upgrade | funpennsylvania.com
Adamanta 16GB (2x8GB) Apple Memory Upgrade DDR3L 1600MHz SODIMM Compatible for iMac (Mid 2011, Late 2012, Early/Late 2013, Late 2014, Mid 2015), MacBook Pro (Early/Late 2011, Mid 2012), Mac Mini at Amazon.com
16 GB RAM Upgrade on MacBook Pro 15" (mid 2012) NON Retina - YouTube
MacBook Pro (13-inch, Mid 2012) Hard Drive (and possibly RAM) replacement : r/mac
Samsung ram Memory Upgrade DDR3 PC3 12800, 1600MHz, 204 PIN, SODIMM for 2012 Apple MacBook Pro's, 2012 iMac's, and 2011/2012 Mac Mini's (8GB kit (2 x 4GB)) at Amazon.com