parts-quick 8GB Memory for Apple MacBook Pro 13-inch and 15-inch (Mid 2012) DDR3L 1600MHz PC3L-12800 SODIMM Compatible RAM at Amazon.com
MacBook Pro Memory Model 9.1 to 9.2 | Mid 2012 | 4GB | MacMemory.com
DDR3 RAM Memory PC3-12800S for MacBook Pro 13" 15" A1278 2012 8GB ORIGINAL | eBay
NEMIX RAM 16GB Kit (2x8GB Upgrade) DDR3-1600 SODIMM PC3-12800 for Apple MacBook Pro Mid 2012 / iMac Late 2012 / iMac 2013, Late 2014, Mid 2015, Mac Mini Late 2012 at Amazon.com
Timetec 8GB KIT(2x4GB) 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
4GB RAM Memory for Apple MacBook Pro 2.9GHz Intel Core i7 (13-inch DDR3) Mid -2012 Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-12800 1600MHz Upgrade - Walmart.com
OWC 8GB (2 x 4GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S08S) at Amazon.com
Memory RAM Upgrade for Apple MacBook Pro 15-inch Mid 2012 4GB/8GB DDR3 SODIMM | 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 PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
8GB (2X4GB KIT) Memory for Apple MacBook Pro 13-inch Mid 2012 DDR3 PC3-12800 RAM | eBay
16GB MacBook Pro RAM Upgrade (2011/2012/2013) - YouTube