Thanks for the guide. I was able to successfully flash this on an Asus Z87 Plus Motherboard for a Haswell CPU, whose USB flashback refused to recognize the contents of the USB drive. The EZ flash utility only recognized the USB flash drive at that respective port, only if a USB extension cable was connected. After using Afwin64 to flash with a modified rom file, I was able to use Afwin64 to extract the file again, and load it into UEFITool, and the 4 nvme files appeared at the bottom of 'dxe' drivers. I don't have a PCI-e/nvme drive to test with.