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SMC Reset on Older Mac Desktops
For older Mac desktops, with no T2 chip, reset the SMC like this:Shut down.Unplug the power.Wait 15 seconds.Reconnect the power cord.Wait 5 seconds.Start the Mac normally.
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SMC FunctionsSMC Reset for Early Mac ProSMC Reset Older Laptops with Nonremovable BatteriesSMC Reset on Laptops with Removable BatteriesSMC Reset on Modern Mac DesktopsSMC Reset on Modern Mac Laptops
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