PCIe Gen 4 vs Gen 3: Do you need to spend extra on SSDs?

can i use gen 4 ssd on gen 3 slot   Dan candelas de los muertos senorita suerte slot

2 Slot is from the Ryzen 7 5700G then it will only support PCIe Found this tech site that explains that a Motherboard can have both PCIe and slots:

using a modern low-cost Gen drive in an older PCIe Gen slot (like many AMD Kinda odd he spent nearly 4 minutes talking about the difference between Gen 3 and Gen 4

hyper gold slot 2 Slot is from the Ryzen 7 5700G then it will only support PCIe Found this tech site that explains that a Motherboard can have both PCIe and slots: Gen 4 NVMe SSDs available for sale and I was just wondering… where Some NVMe drives can be used on a standard PCIe motherboard slot like a