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
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
Apple MacBook Pro 13.3" Intel Core i5 4GB RAM 320GB Hard Drive (MC700LL/A) Early 2011 (Certified Refurbished) Silver A1278 - Best Buy
Apple MacBook Pro 13" (Early 2011) Core i5 8GB Ram 256GB SSD macOS Monterey | eBay
MacBook Pro 13" Unibody Early 2011 RAM Replacement - iFixit Repair Guide
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
MacBook Pro (13-inch, Early 2011) - Technical Specifications
Display Quality - The MacBook Pro Review (13 & 15-inch): 2011 Brings Sandy Bridge
MacBook Pro 13" (Late 2011) 1600MHz Ram - Apple Community
MacBook Pro 13" Unibody Early 2011 RAM Replacement - iFixit Repair Guide
MacBook Pro 13" Unibody Early 2011 Repair - iFixit
Apple MacBook Pro 13-Inch The MacBook Pro "Core i7" 2.7 13-Inch (Early 2011/Thunderbolt) features a 32 nm "Sandy Bridge" 2.7 GHz Intel
16GB MacBook Pro RAM Upgrade (2011/2012/2013) - YouTube
USED: MacBook Pro (13-inch, Early 2011) | Giving Mac
Can early-2011 MacBook Pro 13" handle 1600 RAM? | MacRumors Forums
8GB Upgrade for a Apple MacBook Pro (13-inch, Early 2011) System (DDR3 PC3-10600, Non-ECC, ) at Amazon.com
16GB (2X8GB) SODIMM RAM Memory for Apple MacBook Pro Core i5 2.3 13" Early 2011 DDR3-10600 1333Mhz by Xtremeram at Amazon.com