256GB SSD Hard Drive Suitable For Apple MacBook Pro 13" A1502 MacBook 15" A1398 MacBook Air 11" 13" A1465 A1466 OSX Sierra Late 2013 2014 Mid 2015 (256gb) - Lap Gadgets
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
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Amazon.com: Odyson - 128GB SSD Replacement for MacBook Pro 13" Retina A1502, 15" A1398 (Late 2013, Mid 2014) : Electronics
MacBook Pro 15" Retina Display Mid 2014 Repair - iFixit
MacBook Pro Retina 13 and 15-inch Late 2013 - Mid 2014 SSD upgrade - Flexx memory
Amazon.com: MCE Technologies 500GB Internal SSD Flash Upgrade for 13" and 15" MacBook Pro with Retina Display (Mid 2012 - Early 2013) - Includes Installation Kit! : Electronics
Amazon.com: Odyson - 128GB SSD Replacement for MacBook Pro 13" Retina A1502, 15" A1398 (Late 2013, Mid 2014) : Electronics
Amazon.com: MCE Technologies 500GB Internal SSD Flash Upgrade for 13" and 15" MacBook Pro with Retina Display (Mid 2012 - Early 2013) - Includes Installation Kit! : Electronics