What is a System Management Unit?
System Management Units, also known as SMUs, are a relatively new form of control subsystem. The units first appeared with Mac systems in the latter part of 2004. Essentially, the System Management Unit is a form of microcontroller that is located on the logic board of the equipment. The SMU works in conjunction with the operating system installed on the device, and helps to adjust the operation of several key operations. The System Management Unit was designed to replace the older power management unit found in older Mac products. The newer device was designed to encompass all the functions of the older PMU, and also take over a few other essential processes as well. The idea behind combining all these functions into one central unit was to enhance the power functionality of the computer models. Working as an advanced internal subsystem, the System Management Unit takes orders from the operating system installed on the computer hardware. The operating system monitors the activity leve
