MPG Z790 EDGE WIFI - question about nvme and pcie

While I'm waiting for it to be shipped I've been trying to find out some information of where on my motherboard I should put it I am using an

In the motherboard user guide it says something about PCIe mode and SATA I remember correctly it refers to the bios setting,but which do I choose???

does it matter which pcie slot i use In the motherboard user guide it says something about PCIe mode and SATA I remember correctly it refers to the bios setting,but which do I choose???

does stopping a slot machine change the outcome 2, Quad NVMe SSD, Aura RGB Lighting) According to the user Manuel , it makes no