2,4 GHz 8 GB RAM placa lógica 820-3476-A para MacBook Pro 13" A1502 2013 2014 | eBay
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
macbook pro - Can I upgrade RAM on late 2013 retina Mac Book Pro? - Ask Different
A-Tech 8GB 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
MacBook Air 13" i5 4GB RAM (2014) | MACNIACOS
13in Retina MacBook Pro review, 2.6GHz, 2014 | Macworld
SOLVED: Can RAM be upgraded? - MacBook Pro 13" Retina Display Mid 2014 - iFixit