4 Things to Know About the MSI B550M PRO-VDH's SATA Ports
Four SATA 6Gb/s ports are available Labeled SATA1 through SATA4, these ports support standard SATA drives at 6Gb/s speeds.
Enough for most storage setups You can connect a couple of SSDs and one or two spinning hard drives for bulk storage without running out of ports.
No port sharing with M.2 slots Unlike some boards, these SATA ports don’t disable when using M.2 drives, so you keep all four available.
SATA 6Gb/s is the standard speed This is the typical maximum for SATA drives, so you won’t get faster performance than any other modern SATA port.