 "Lenovo ThinkPad - solid state drive 512 GB PCI Express 3.0 x4 (NVMe)" " Lenovo (NVMe) 4XB0K48502 Solid State Drives (SSDs) CDWG.com
"The ThinkPad 512GB PCIE NVMe SSD with M.2 form factor, high speed with PCIE-NVMe interface , it is the best choice to upgrade your ThinkPad systems." 
 "Samsung 960 PRO MZ-V6P2T0BW - solid state drive 2 TB PCI Express 3.0 x4" " Samsung x4 Solid State Drives (SSDs) CDW.com
"Experience unprecedented performance with our high-capacity, highly reliable 960 PRO Series NVMe M.2 SSDs designed for heavy workloads and engineering applications. Non-Volatile Memory Express (NVMe) outperforms our SATA SSDs with exceptionally fast read/write speeds. Samsung's Magician advanced software solution provides professional management, monitoring and maintenance with automatic updates." 