How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
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Apple MacBook Pro 2010 (Mid) 13-inch 15-inch 17-inch MacBookPro6,1 MacBookPro6,2 MacBookPro7,1 SSD RAM OSX UPGRADE - ZD Laptop Service Centre
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com