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2.8GHz i7 Logic Board 8GB Ram -13" MacBook Pro Retina A1502 late 2013 661-8149 | eBay
Macbook Pro(Retina 13inch, Late 2013) up … - Apple Community
Amazon.com: Late-2013 Apple MacBook Pro with 2.4GHz Intel Core i5 (13-inch, 4GB RAM, 128GB Storage) (Renewed) : Electronics
A-Tech 8GB Kit (2x4GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
i7 2.3 GHz 16GB RAM Logic Board 820-3787-A for MacBook Pro 15" A1398 Late 2013 | eBay
A1398 Logic Board For 15" MacBook Pro Late 2013 Models