MacBook Pro 13" Unibody Late 2011 RAM Replacement - iFixit Repair Guide
Apple MacBook Pro 13-Inch 2011 Core i7 2.7 GHz 8GB RAM 500GB HDD | eBay
MacBook Pro (13-inch, Early 2011) - Technical Specifications
MacBook Pro 13" Unibody Early 2011 RAM Replacement - iFixit Repair Guide
Apple MacBook Pro 13 inch (Late 2011) - Intel Core i5 - Catawiki
MacBook Pro 13" Unibody (Mid 2012) Memory Maxxer RAM Upgrade Kit - iFixit Store
Apple MacBook Pro Early 2011 Crucial Memory Upgrade - YouTube
Apple MacBook Pro (13-inch, Early 2011) 2.3GHz Intel Core i5, 6GB RAM, 128GB SSD | eBay
Apple MacBook Pro 13 inch 2011-10 MD313LL/A - Notebookcheck.net External Reviews
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
macos - What is the maximum amount of RAM a 2011 MacBook Pro can utilize? - Ask Different
Apple MacBook Pro 13 inch (Early 2011) - Intel Core i5 - Catawiki
Amazon.com: Timetec 4GB 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) SODIMM MAC RAM Upgrade : Electronics
CMS 8GB (2X4GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® MacBook Pro (Ddr3) 13-Inch (Late 2011) Ddr3 - A29 at Amazon.com
Apple MacBook Pro A1278 Early 2011 Core i5-2415M 2.3 GHz 4 GB RAM 500 GB HDD 13" | eBay