NVME M2 drives: which slot to use?

AdvancedOnboard Devices Configuration: PCI-EX16_2 Slot Bandwidth Runs at AUTO with USB3_E56 port and PCIEx1_1 slot

NVME M2 drives: which slot to use? I have both PCIe slot PCIeX1_1 and M2_2 occupied and have switched multiple times between SATA and NVMe mode on the U2 slot without loosing

AdvancedOnboard Devices Configuration: PCI-EX16_2 Slot Bandwidth Runs at AUTO with USB3_E56 port and PCIEx1_1 slot

pcie slot gpu slot from auto to X4 mode it disables PCIeX1_1 and PCIeX1_2 slots' which is where i have my soundcard If i leave it on

* The PCIEX4 slot shares bandwidth with the PCIEX1_1 and PCIEX1_2 slots When the PCIEX1_1 slot or the PCIEX1_2 slot is populated with an expansion card

pciex1_1 slot Not sure why they didn't just link PCIEX1_1 to PCIEX4 as that slot usually becomes unusable due to the GPU also, i can't seem to find any

PCIe cards can always operate in PCIe slots with the same or more lanes than the card For example, an x8 card can operate in a slot with x8, x16, or x32 lanes