16GB 2X8GB Memory RAM for Apple MacBook Pro MD103LL/A (15" Quad-core Intel Core i7 2.3GHz) 204pin 1600MHz PC3-12800 DDR3 SO-DIMM Black Diamond Memory Module Upgrade - Walmart.com
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
Apple MacBook Pro MD103LL/A 15.4" 4GB 500GB Core™ i7-3615QM 2.3GHz Mac – Device Refresh