Upgrading Ram in a Macbook Pro 13" | How to Upgrade Ram on 13" Macbook Pro - YouTube
MacBook Air 16GB RAM Upgrade - YouTube
MacBook Air (13-inch, Early 2014) - Technical Specifications
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A-Tech 16GB Kit (2x8GB) 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
Amazon.com: Odyson - Logic Board 1.4GHz i5 (i5-4260U), 4GB RAM Replacement for MacBook Air 11" A1465 (Early 2014) : Electronics
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How to add more RAM to your MacBook Pro - CNET
Amazon.com: Odyson - Logic Board 1.4GHz Core i5, 4GB RAM Replacement for MacBook Air 13" A1466 (Early 2014) : Electronics