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SMC Command 0x82

Set Standby/Power Off/Reboot

This Command Message triggers various power management operations.

Message: 82 XX YY ZZ
XX YY ZZ Meaning
01 00 -- Power Off (@3dh=1, @64h=#5a)
01 32 -- Power Off (@3dh=0, Clears RTC?)
04 31 ?? Reboot (@3dh=1, @64h=#01, Soft Reset)
04 30 ?? Reboot (@3dh=0, @64h=#03, Power Cycle)
04 33 -- Clear (@3dh=0)