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 :
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
Early 2011 MacBook Pro 15" 16 GB RAM & Hard Drive Upgrade - YouTube
MacBook Pro "Core i5" 2.4 13" Late 2011 Specs (Late 2011 13", MD313LL/A, MacBookPro8,1, A1278, 2555*): EveryMac.com
2011 Macbook Pro 13" A1278 RAM Upgrade - YouTube
SOLVED: Best RAM for MacBook Pro Late 2011? - MacBook Pro 15" Unibody Late 2011 - iFixit
MacBook Pro MC700LL/A Apple Core i5 2.3 GHz Specs (Early 2011 13", MacBookPro8,1 - A1278 (EMC 2419)) - Techable
Apple 15-inch MacBook Pro (Late 2011) Review
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
Apple M1 Max First Impressions: A MacBook Pro that's actually 'Pro': Digital Photography Review
Apple MacBook Pro 2011 (Early) (Late) 13-inch 15-inch 17-inch MacBookPro8,1 MacBookPro8,2 MacBookPro8,3 SSD RAM OSX UPGRADE - ZD Laptop Service Centre
MacBook Pro MC700LL/A Apple Core i5 2.3 GHz Specs (Early 2011 13", MacBookPro8,1 - A1278 (EMC 2419)) - Techable
Apple MacBook Pro Core i5 2.4 13" Late 2011 1TB HDD 16GB Ram Upgrade | eBay
8GB RAM Upgrade for 2011 MacBook Pro & Mac Mini Core i5 & i7 – $34 | OSXDaily
macos - What is the maximum amount of RAM a 2011 MacBook Pro can utilize? - Ask Different
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
MacBook Pro: How to remove or install memory - Apple Support
Apple MacBook Pro 13 (Early 2011) review: Apple MacBook Pro 13 (Early 2011) - CNET
How to Upgrade RAM in MacBook Pro 17" 2011 16GB Install Tutorial - YouTube
Memory/ RAM Upgrades For Apple MacBook Pro 2011 from OWC
Memory/ RAM Upgrades For Apple MacBook Pro 2011 from OWC