Apple MacBook Pro (13-inch, Early 2011) 2.3GHz Intel Core i5, 6GB RAM, 128GB SSD | eBay
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
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16GB MacBook Pro RAM Upgrade (2011) - YouTube
Display Quality - The MacBook Pro Review (13 & 15-inch): 2011 Brings Sandy Bridge
Apple MacBook Pro A1278 Early-2011 13" Intel i5 @ 2.3GHz 8GB RAM 500GB HDD *READ | eBay
Apple MacBook Pro Core I5 2.3ghz 13" 8gb RAM A1278 Early 2011 | eBay
MacBook Pro 13" Unibody Early 2011 RAM Replacement - iFixit Repair Guide
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MacBook Pro "Core i5" 2.3 13" Early 2011 Specs (Early 2011 13", MC700LL/A, MacBookPro8,1, A1278, 2419*): EveryMac.com
Apple MacBook Pro 13" with SSD (Early 2011): Unboxing and Demo - YouTube
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Can early-2011 MacBook Pro 13" handle 1600 RAM? | MacRumors Forums
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MacBook Pro 13" (Late 2011) 1600MHz Ram - Apple Community
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macos - What is the maximum amount of RAM a 2011 MacBook Pro can utilize? - Ask Different
Review: The MacBook Pro (13-inch, Early 2011) – 512 Pixels
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MacBook Pro 13" Early 2011 A1278 2.3GHZ Intel Core i5 MC700LL/A 4GB RAM 320GB HD | eBay
Apple MacBook Pro 13" (Early 2011). Intel Core i5-2415M @ 2.30GHz. 4GB. 320GB. | eBay
MacBook Pro (13-inch, Early 2011) - Technical Specifications