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

I have recently bought a B450 mobo, and it comes with CrossFire support The thing is, only one of the PCIe slot is x16, the other one is x4 I have a

Amphenol has an array of Card Edge connectors supporting PCI Express® Gen 3, Gen 4 and Gen 5 standards along with PCIe® Connectors which provide high

pcie slot qrelease 4-3, per single PCI Segment Group show less , ECN, November 18, 2018 Errata for the PCI Express® Base Specification Revision , , Errata, October 31

pcie x1 slot function Amphenol has an array of Card Edge connectors supporting PCI Express® Gen 3, Gen 4 and Gen 5 standards along with PCIe® Connectors which provide high