MacBook Pro: How to remove or install memory - Apple Support
Memory/ RAM Upgrades For Apple MacBook Pro 2011 from OWC
Apple MacBook Pro Early 2011 Crucial Memory Upgrade - YouTube
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
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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 at Amazon.com
16GB MacBook Pro RAM Upgrade (2011/2012/2013) - YouTube
MacBook Pro 13" Unibody Late 2011 RAM Replacement - iFixit Repair Guide
How to Upgrade RAM in MacBook Pro 17" 2011 16GB Install Tutorial - YouTube
16 GB RAM Upgrades for New MacBook Pros Now Available - MacRumors
How to boost your MacBook Pro performance | ZDNET
Early 2011 MacBook Pro 15" 16 GB RAM & Hard Drive Upgrade - YouTube
Early 2011 MacBook Pro RAM Upgrade – Hack-the-Planet
Macbook Pro (Late 2011) Memory Upgrade - Apple Community