MacBook Pro 13" Unibody Early 2011 RAM Replacement - iFixit Repair Guide
macos - What is the maximum amount of RAM a 2011 MacBook Pro can utilize? - Ask Different
17” MacBook Pro 💻 Late 2011. Just Purchased, Pretty much perfect condition, no dents! 8GB of RAM. Great deal at $350 : r/mac
Refurbished Apple MacBook Pro 13 Inch Dual-Core i5 2.3 GHz (2011) MC700B/A – Affordable Apple Mac Specialist
Timetec 16GB KIT(2x8GB) 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 : Amazon.ca: Electronics