NVMe is independent of sata ports,only m2 sata ssd shares bandwidth with sata ports.This is true for almost all mobos. B450 Pro 4 has 2 m2 slots out of which 1st is NVMe while 2nd is m2 sata & installing m2 sata ssd in 2nd slot will disable 2 sata ports out of 6 on mobo. This is also why it is pointless to buy m2 sata ssd as using it effectively means losing 2 sata ports so why not use regular 2.5" sata ssd which is same performance wise but use 1 sata port.Does my mobo will support one nvme, 1 m. 2 and one hdd all together.