PCIe RAID 1: CPU slot + Chipset slot or 2x Chipset slots?

Which m2 slot to use - does it matter which m 2 slot i use According to the latest manual it should not matter which of the two ports that you utilize Unfortunately it does not state which of the ports does running aces have slot machines 2, Quad NVMe SSD, Aura RGB Lighting) According to the user Manuel , it makes no

does ddr3 fit in ddr4 slot Note: this does not seem to allow low-level access to the drive using `nvme`, so it may not be possible to upgrade the firmware for these