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_DSM Property: "use-msi" & "sata-express-power-off"


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Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
                        Store (Package (0x04)
                            }, Local0)
                        DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                        Return (Local0)

Does anyone know, what they are for?


It's in all Haswell with SSD, Apple tables...


Something for PowerManagement, but what exactly?


I added them into my DSDT, now this properties are in ioreg, but they didn't change anything for me...

everything is working like before...


Cheers :-)

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