OWC 2.0TB Aura Pro X2 SSD Compatible with MacBook Air (Mid 2013-2017), and MacBook Pro (Retina, Late 2013 - Mid 2015), Mac Pro (Late 2013), and Mac Mini (Late 2014)
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
Amazon.com: OWC 1TB Aura N2 NVMe SSD Upgrade Kit w/Envoy Pro Enclosure Compatible with MacBook Pro w/Retina Display (Late 2013 - Mid 2015) and MacBook Air (Mid 2013 -Mid 2017) : Electronics
Upgrading 2013/2014 Macbook Pro SSD to M.2 NVMe | Page 2 | MacRumors Forums