What is the function of the SMC (System Management Controller)?

The System Management Controller (SMC) plays a crucial role in managing various power-related functions within Apple devices. It is responsible for controlling the power management features, which include regulating the sleep and wake functions of the computer, as well as managing battery charging and temperature regulation. The SMC ensures that the device operates efficiently by handling the power supply to different components, which ultimately supports overall system stability and performance.

This control of power functions is essential, particularly for laptops like MacBook models, where battery health and power consumption directly impact usability. By managing when to put the system to sleep, how to charge the battery optimally, and regulating thermal conditions, the SMC helps prolong battery life and enhance user experience.