HP Z440 Workstation with Intel Xeon E5-1630 v3 3.70GHz Quad Core Processor, 4GB DDR4 Memory, 2TB Hard Drive, AMD FirePro V5900, and Windows 10 Professional 64-bit Installed (Refurbished) - Walmart.com
Solved: Z440 with M.2 NVMe bootable OS - HP Support Community - 7077487
HP Z640 Workstation 2x E5-2620 v3 2.40 GHz, 64GB DDR4 500GB M.2 SSD K4000 - Fox in the Box