M.2 Port for second SSD ? Elitedesk 800 G3 Tow - HP Support Community - 6453500
Amazon.com: HP EliteDesk 800 G3 Small Form Desktop, Intel Core 7th Gen i5 7500 3.4Ghz, 8GB DDR4 RAM, 256GB NVMe PCIe M.2 SSD, USB Type C, Windows 10 Pro (Renewed) : Electronics