first slot NVMe becomes devnvme1 and second slot one is dev

NVME drive not working in second slot of Asrock B450 nvme slot This shouldn't be a problem Personally I'd put it in the top slot so it can utilize the CPU lanes You could also clone or restore a image of nvme slot vs m2 Buy ZEBRONICS ZEB-H81M2 with PCIE NVMe Slot Motherboard only for Rs 5399 from Only Genuine Products

nvme 40 in 30 slot 1 Answer 1 One way to determinate the generation of a slot where a device is attached is by its bandwidth First we need to identify at