Motherboard does not detect ssd NVME PCIe

‎NVMe SSD slot Generation compatibility? gen 4 nvme in gen 3 slot Testing and installing a Gen4 NVME SSD on a Gen3 Motherboard This includes Unboxing geng138 slot PCIe gen 3 and PCIe gen 4 generally have the same loading time for windows However, how data is read and written between the two might be a lot

gen 4 nvme in gen 3 slot It's hard to find PCIe NVMe drives that can cap the write speed of Thunderbolt NVMe enclosure Or maybe all my PCIe NVMe drives are old