KingSpec M.2 NVMe with DRAM cache 2280 PCIe Gen.3 x4 SSD 512GB, 1TB, 2TB | eBay
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