Can I use a Gen 4 NVMe SSd in a Gen 2 slot?

2 slots support only PCIe SSDs Combo SSD slots support both interfaces so you can use either a SATA SSD or a PCIe SSD with them NVMe is

2 Get the generation of the PCIe itself $ sudo lspci -vv -s 08 grep -w LnkCap LnkCap: Port

m24 slot 2 SSD The P300 is Patriot's next generation of mid-tier PCIe Gen3 x4 NVMe SSD to hit the market, offering 25% higher transfer speeds and IOPs

m2 nvme slot The manual and tech specs does not say the specific SSD slots, just that they are nvme 2) supports only PCIe Gen 3 x4 SSDs or SATA SSDs