Amazon.com: Silicon Power 512GB NVMe M.2 PCIe Gen3x4 2280 R/W up to 3,400/2,300MB/s SSD (SU512GBP34A80M28AB) : Electronics
HP EX920 M.2 512GB PCIe 3.0 x4 NVMe 3D TLC NAND Internal Solid State Drive ( SSD) 2YY46AA#ABC - Newegg.com
Amazon.com: Cloudeck NVMe SSD 512GB PCIe Gen3x4 Internal Solid State Drive with 3D NAND for MacBook Air (Mid 2013-2017), MacBook Pro(Retina, Late 2013-Mid 2015), Mac Pro(2013) & Mini (2014), iMac(2013-2017) : Electronics