Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot?

x4 NVMe SSDs directly use PCIe bus protocol, and so can be directly plugged into a full-size PCIe slot using a simple passive adapter But there

The card physically has an X4 interface, so it could be plugged into an X4, X8, or X16 slot It can still physically only access 4 lanes (else

candy stars slot You can install an PCIe SSD in a PCIe or a PCIe slot, in a system where the CPU does not have PCIe support and

can casinos control slot machines Table 3 of section in the document “PCIe BGA SSD ECR This proposal will allow PCIe and SATA to be delivered using a BGA package