Your Asrock B450M Pro4 can accommodate an NVMe SSD in the M.2 SATA 3 port.
Your Asrock B450M Pro4 can accommodate an NVMe SSD in the M.2 SATA 3 port.
Yes, I recognize the distinctions between NVMe and SATA connections. Your queries will be addressed directly.
I understand you're talking about using an extra NVMe drive. Just to clarify, I'm here to help with your question.