Restored Apple A1398 MC975LL/A 15.4" MacBook Pro, Mac OS X 10.11 El Capitan, Intel Core i7-3615QM Processor, 16GB RAM, 256GB Solid State Drive (Refurbished) - Walmart.com
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661-8303 Apple Logic Board 2.3GHz i7 16GB Ram Dual Graphics for MAcBook Pro 15-inch Retina Late 2013 A1398
hardware failure - RAM fail in Macbook Pro with attached RAM - Super User
Restored Apple A1398 MC975LL/A 15.4" MacBook Pro, Mac OS X 10.11 El Capitan, Intel Core i7-3615QM Processor, 16GB RAM, 256GB Solid State Drive (Refurbished) - Walmart.com
Macbook Pro upgrade kit for model A1398 Hardrive and Memory | eBay
Refurbished 2015 Apple MacBook Pro Quad Core i7 2.8 15" Dual Graphics 16GB RAM 2TB SSD MJLU2LL/A A1398