A-Tech 8GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module
How To: MacBook Pro Late 2011 Memory Upgrade - 16GB (2 X 8GB) : 6 Steps - Instructables
APPLE MACBOOK PRO A1278 INTEL CORE I5 @ 2.4GHZ 8GB RAM 500GB HDD LATE 2011 13" | eBay
How to upgrade the RAM on your 13-inch MacBook Pro
Amazon.com: Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3 1333MHz PC3-10600 CL9 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac(Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) MAC RAM Upgrade :
Apple MacBook Pro Late 2011 8GB Memory & SSD Upgrade - YouTube
Macbook Pro A1278 MD313LL/A Late 2011 13" 2GB 1Rx8 Memory RAM HMT325S6BFR8C-H9 | eBay
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
Apple MacBook Pro 13" Late 2011 (A1278, EMC 2555) i5 2.40GHz 4GB RAM 500GB SSD | eBay
16GB MacBook Pro RAM Upgrade (2011/2012/2013) - YouTube
MacBook Pro 13" Unibody Late 2011 RAM Replacement - iFixit Repair Guide
macos - What is the maximum amount of RAM a 2011 MacBook Pro can utilize? - Ask Different
MacBook Pro 13" (Late 2011) 1600MHz Ram - Apple Community
A-Tech 4GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010, Mid 2011, Late 2011), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module
A-Tech 16GB (2x8GB) RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
This old baby working fine still!!! (Early 2011 17inch MacBook Pro upgraded to 16GB Ram and 1TB SSD) : r/macbook
MacBook Pro 13" Unibody Late 2011 RAM Replacement - iFixit Repair Guide