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Battery Life - The MacBook Pro Review (13 & 15-inch): 2011 Brings Sandy Bridge
Apple MacBook Pro 13 inch 2011-10 MD313LL/A - Notebookcheck.net External Reviews
MacBook Pro 13" Unibody (Early 2011-Late 2011) Display Assembly
MacBook Pro "Core i5" 2.4 13" Late 2011 Specs (Late 2011 13", MD313LL/A, MacBookPro8,1, A1278, 2555*): EveryMac.com
MacBook Pro 2011 15-inch (Mac OS Sonoma) : r/OpenCoreLegacyPatcher
Apple MacBook Pro Fall 2011 review: Apple MacBook Pro Fall 2011 - CNET
Identify your MacBook Pro model - Apple Support
Apple MacBook Pro 15 Early 2011 (2.0 GHz Quad-Core, non-glare, MC721LL/A) - Notebookcheck.net External Reviews
MacBook Pro 13-inch early 2011 Intel Core 2 duo 4GB 1067 OS Sierra | eBay
Apple 15-inch MacBook Pro (Late 2011) Review
Apple MacBook Pro 13" with SSD (Early 2011): Unboxing and Demo - YouTube
Review: The MacBook Pro (13-inch, Early 2011) – 512 Pixels
Apple MacBook Pro 15 inch 2011-10 MD322 - Notebookcheck.net External Reviews
Apple 15-inch MacBook Pro (Late 2011) Review
Apple MacBook Pro 15-inch Early 2011 2GHz Intel Core i7 (MC721LL/A) – UNICOM, Inc.