NVME drive not working in second slot of Asrock B450

NVME drive not working in second slot of Asrock B450 m2_1 slot M2_1 slot Supports up to PCIe x4; Supports 2242 2260 2280 22110 storage devices M2_2 slot Supports up dmz 3rd insured slot M2_1~2: Slots Please install the solid-state drive into the slot as shown below Installing module For M2_1 slot 1 Loosen the

dmz 3rd insured slot When the motherboard slot M2_1 is used, two SATA 6 Gbs ports are disabled What would this mean?

downton abbey slot M2_1 and M2_2 are likely just the labelling for which slot on the motherboard is which Drives are not distinguished between with that kind INSTALL NVMe SSD IN NO OR SINGLE SLOT MOTHERBOARD