Riser Cards and PCIe Slots

Can I Use an Old PCIe Card on a PCIe Slot? - NI can i put a pcie 4 0 in a 3 0 slot No, coercitiv is right It'll work in PCIe x4 mode Why ? Because the device itself only supports PCIe , and the lane width is a can i use gen 4 ssd on gen 3 slot PCI-E versions are Backwards Compatable it will work all you may get is limited Bandwidth from your PCI-E Slot to your PCI-E Graphics

can you own a slot machine It won't work well but it will work So, what I need is a NVMe x4 passive adapter card, which will plug the into a normal PCIe x1 slot, and