How to Upgrade SSD for Macbook Pro/Air 2013/2014/2015 Retina - YouTube
SSD upgrade on MacBook Pro 2014
Amazon.com: PCIe NVMe Gen3x4 SSD 1TB 512GB 256GB 128GB 3D TLC NAND Flash Hard Drive SSD Replacement for Macbook Air 2013-2017, Macbook Pro Retina 2013-2015, iMac 2013-2017, Mac Pro 2013, Mac Mini 2014 (1TB) : Electronics
Review: Apple's mid-2014 15-inch MacBook Pro with Retina display | AppleInsider
MacBook Pro (Retina, 13-inch, Mid 2014) - Technical Specifications
PCIe SSD Hard Drive 512GB For MacBook Air, Pro & Mac Pro