How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
Amazon.com: INDMEM NVMe PCIe SSD 256GB 3D TLC NAND Flash Hard Drive Replacement for Mid 2013-2017 MacBook Air, Late 2013 - Mid 2015 MacBook Pro Retina, Late 2013-2017 iMac, 2013 Mac Pro, 2014 Mac Mini : Electronics
Amazon.com: Odyson - 128GB SSD Replacement for MacBook Pro 13" Retina A1502, 15" A1398 (Late 2013, Mid 2014) : Electronics
SSD upgrade on MacBook Pro 2014
How to add a fast new SSD to your old Mac or MacBook for only $150 - 9to5Mac
1TB SSD Replacement for MacBook Air, Pro Retina & Mac Pro