How to add a fast new SSD to your old Mac or MacBook for only $150 - 9to5Mac
PCIe SSD Enclosure for MacBook Air Pro Retina 2013 2014 2015 2016 2017, USB 3.0 to A1465 A1466 A1398 A1502 SSD Adapter with Case (12+16 pin)-Macbook SSD is not included - WIT Computers
MacBook Pro 13" and 15" Retina (Late 2013-Mid 2014) SSD
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
Early 2014 MacBook Air SSD upgrade - YouTube
13" inch MacBook Air A1466 Early 2014 Disassembly SSD Upgrade M.2 PCIe NVMe SSD - YouTube
Reletech P400 M 512GB SSD For 2013 2014 2015 Macbook Pro Retina A1502 A1398 Macbook Air A1465 A1466 SSD iMac A1418 A1419 SSD Internal SSDs - Newegg.com