NVME M2 drives: which slot to use?

On ZBOX Mini PCs equipped with an NVMePCIe SSD slot, current ZBOX BIOS' lists the NVMePCIe SSD separate from the standard SATA storage devices

What slot is the Samsung device? If it's M key then it's not compatible with your device Most slots are not compatible

m2 pcie 40 in 30 slot Four NVMe SSD slots on a PCIe x16 card Silent operation Add your own ultra-fast SSDs for Mac, Windows, and Linux

m2_1 slot 2 SSD is a small form factor solid-state drive that internally mounted storage expansion cards use SSDs conform to a computer industry specification