DIY Bundle - 1TB OWC 6G SSD and HDD Kit for 21.5-Inch iMac
How to Upgrade/Replace the PCIe SSD in a 21.5-inch iMac (Late 2013) on Vimeo
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
2013 MacBook Air NGFF PCIe SSD Review (256GB) - Pre-Configured MBA Doesn't Set The 'PC' Performance Bar | The SSD Review