The '''System Management Controller''' ('''SMC''') is a subsystem of [[Intel]] and Apple processor-based [[Macintosh]] computers. It is similar in function to the older [[System Management Unit|SMU]], or [[Power Management Unit|PMU]], or UAE of non-Intel Macintosh computers.<ref>{{cite web |title=HT2368: About the SMC Firmware Updates |url=http://support.apple.com:80/kb/HT2368?viewlocale=en_US |website=Official Apple Support |archiveurl=https://web.archive.org/web/20081223202919/http://support.apple.com/kb/HT2368?viewlocale=en_US |archivedate=2008-12-23 |url-status=dead }}</ref><ref>{{cite web |title=HT202040: About the SMC Firmware Updates |url=https://support.apple.com/en-us/HT202040 |website=Official Apple Support |publisher= |accessdate=2018-04-28}}</ref>
