The System Management Controller ( SMC ) is a subsystem of Intel and Apple silicon -based Macintosh computers. It is similar in function to the older SMU or PMU of non-Intel Macintosh computers. ^{[1] [2]}

Overview [ edit ]

The SMC has roles in controlling thermal and power management, battery charging, video mode switching, sleep and wake , hibernation , and LED indicators. It also enables enforcement of the macOS End User License , allowing macOS to identify when it is running on non-Apple hardware. ^[3]

See also [ edit ]

• Embedded controller (EC)
• Power management integrated circuit (PMIC)
• Power Management Unit (PMU)
• System Management Unit (SMU)
• Apple T2

References [ edit ]

External links [ edit ]

• EFI and SMC firmware updates for Intel-based Macs