Amazon.com: RIITOP M.2 NVMe SSD to 12+16Pin Upgrade Adapter for MacBook Air (2013-2017 Year) A1465 A1466 and Mac Pro (Late 2013-2015 Year) : Electronics
Kingston 500GB A2000 M.2 2280 NVMe Internal SSD PCIe Up to 2200 MB/s with Full Security Suite SA2000M8/500G - Newegg.com
Upgrading 2013/2014 Macbook Pro SSD to M.2 NVMe | MacRumors Forums
Refurbished 2015 Apple MacBook Pro Quad Core i7 2.8 15" Dual Graphics 16GB RAM 2TB SSD MJLU2LL/A A1398
NGFF M.2 PCIe SSD Card as 2013 2014 2015 MacBook SSD [ST-NGFF2013] - $7.99 : Sintech Eshop!, The World of PC Adapter Card
Amazon.com: RIITOP M.2 NVMe SSD to 12+16Pin Upgrade Adapter for MacBook Air (2013-2017 Year) A1465 A1466 and Mac Pro (Late 2013-2015 Year) : Electronics
MBP Retina 13 Late 2013 DIY upgrade : r/macbookpro