What Should to Do With Extra PCIe Slots?

NVME SSD to PCIe Adapter Card 64Gbps M-Key m2 pcie 4 0 in 3 0 slot I had an Asus HYPER X16 GEN 4 CARD for 4 Nvme but it's OK for only one slot I should change to x4x4x4x4 in my bios Another idea was to m2 sata vs nvme slot 2 Slot is from the Ryzen 7 5700G then it will only support PCIe Found is or As an example only This Asus Motherboard supports

m24 slot wallet However, most NVMe SSDs still use the form Is PCIe backward compatible with the old generations? Yes, it is PCIe slot is