Timetec Hynix IC 8GB Compatible for Apple DDR3L 1600MHz PC3L-12800 SODIMM Memory Upgrade for Early/Mid/Late 2011, Mid/Late 2012, Early/Late 2013, Late 2014, Mid 2015 MacBook Pro, iMac, Mac Mini (8GB) - Newegg.com
Timetec Hynix IC Apple 8GB DDR3L 1600MHz PC3L-12800 SODIMM Memory upgrade For MacBook Pro 13-inch/15-inch Mid 2012, iMac 21.5-inch Late 2012/ Early/ Late 2013 (8GB) - Walmart.com
Can early-2011 MacBook Pro 13" handle 1600 RAM? | MacRumors Forums
Crucial 8GB Memory Upgrade for Apple MacBook Pro 13 inch (Mid 2012) PC3-12800S 1600MHz DDR3 SODIMM RAM (Crucial CT8G3S160BM Equivalent) - Newegg.com
Can I use 16GB DDR3-1600MHz RAM in an early Macbook Pro 8.2? - Ask Different
Apple 8GB Memory Kit (2x4GB) DDR3-1600MHz PC3-12800 SODIMM for MacBook Pro at Amazon.com
Buy 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 (16GB kit (2 x 8GB)) Online in Vietnam. B00BP6S33E
Memory/ RAM Upgrades For Apple MacBook Pro 2011 from OWC