Can You Use a PCIe Express Card In a Slot?

Removing and Installing a PCIe2 x16 Card pcie 2 0 x16 slot But PCIe and PCIe are outdated Today, PCIe is For example, a PCIe SSD with four lanes can be inserted into a x16 slot pcie gen 4 in gen 3 slot x, , , ) PCIe cards can always operate in PCIe slots with the Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8 connection

pcie 4 ssd in pcie 3 slot B550M DS3H ACAMD B550 Ultra Durable Motherboard with Pure Digital VRM Solution, PCIe x16 XPG GAMMIX S50 CORE PCIe Gen4 x4 2280 Solid State Drive –