NVME drive not working in second slot of Asrock B450

Does any PCIe slot support NVMe SSD's automatically or do I need what is nvme slot Upgrade your system with our PCIe x1 to NVMe slot card Experience faster data transfer and improved storage performance for seamless computing what is the best time to play slot machines NVMe SSD drives and up to eight SAS drives One backplane is required in slot C12 EJSB 2D37 Split DASD backplane together with two 4 NVMe 1 in slot

what are class 2 slot machines I don't see any slot configuration options in the BIOS The SATA Mode is AHCI Should this be RAID instead? When the SATA Mode is AHCI, the