mSata Question

I am not sure I understand about a SATA3 port being disabled if I choose to use the mSATA port.

Can I do this?

Use the mSATA port with a SSD for my boot drive.

Use the 2 x SATA 6Gb/s connectors with (2) SATA3 internal hard drives and achieve SATA3 speeds on all three devices.

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Newbie, having fun.