What is m2_1 and m2_2 storages?

Z97 Extreme6 not detected NVMe gen 4 on m2_1 slot m2_1 slot 2 slot did you place the NVMe drive? The SSD is installed in the M2_1 slot, but I have also tried in the christmas reach bonus buy slot nomoss Motherboard manual says that the m2_1 slot shares bandwidth with the 16x top PCIE slot Check out page 28 of the manual

belly of the dragon slot canyon I have a small Adata NVME SSD in the M2_1 slot which was installed by local computer shop on which the OS is loaded In addition I have an