installing Gen4 NVME on a Gen3 Motherboard

NVMe x4 adapter card for PCIe x1 slot nvme gen 4 in gen 3 slot Your notebook's NVMe slot is PCIe Gen 3 While a Gen 4 SSD will work, it will only run at the max speed allowed by the Gen 3 slot, which is nvme slot NVMe SSDs, even the last-gen PCIe Gen 3-based NVMe SSDs, are immensely faster than this Once you start pushing further beyond into NVMe Gen 4

nvme slot vs m2 Gen 4 SSDs aren't worth it unless you're working with large files and doing a lot of sequential readwrites