Can You Help me Understand This SATA NVMe PCIe SSD Gen

pcie 4 in pcie 3 slot ssd   Dan pcie x1 slot function

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

2_1 slot on my ASUS ROG Strix x570i mobo The only thing I can find in bios is set to _1 link = Gen 4 Yet the SSD is still running at Gen 3 As the subsequent iteration of Gen3, Gen4's data transfer rate is twice that of PCIe Gen 3, enabling PCIe Gen 4 devices to transfer data at a faster speed

apk open slot 2 PCIe 3 and 4 drives look identical from the outside The difference is the standard in the way they connect to the motherboard, and thus, the Yes, PCIe standards are thankfully backwards compatible, meaning that a PCIe device will work in a PCIe slot, but it will only be able to reach PCIe