System Management Controller: Difference between revisions

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The '''System Management Controller''' ('''SMC''') is a subsystem of [[Intel]] [[Macintosh]] computers. It is similar in function to the older [[System Management Unit|SMU]] or [[Power Management Unit|PMU]] of PowerPC based 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 |archive-date=2021-05-19 |archive-url=https://web.archive.org/web/20210519004618/https://support.apple.com/en-us/HT202040 |url-status=live }}</ref>

{{linkrot|date=December 2016}}

The '''System Management Controller''' ('''SMC''') is a subsystem of [[Intel]] processor-based [[Macintosh]] computers. It is similar in function to the older [[System Management Unit|SMU]] or [[Power Management Unit|PMU]] of non-Intel Macintosh computers.<ref>[http://docs.info.apple.com/article.html?artnum=303725 Apple general documentation on SMC Updates]</ref>

==Overview==

The SMC has roles in controlling thermal and power management, battery charging, video mode switching, [[Sleepsleep mode|sleep and wake]], [[Hibernationhibernation (computing)|hibernation]], and [[Lightlight-emitting diode|LED]] indicators. It also enables enforcement of the [[Mac OS XmacOS]] [[End-user license agreement|End User License]], allowing itmacOS to identify when it is running on non-Apple hardware.<ref>{{cite webpodcast |titlehost=Interview[[Randal withL. AndySchwartz|Randal Hall,Schwartz]] Product|date=2010-08-11 Manager|df=mdy for|title=VirtualBox Oracle|url=https://twit.tv/shows/floss-weekly/episodes/130 VM|website=[[FLOSS Weekly]] VirtualBox|series=130 |publisher=[[TWiT.tv]] |accessdate=2018-04-28 |archive-date=2018-04-28 |archive-url=httphttps://web.archive.org/web/20180428181223/https://twit.tv/floss130shows/floss-weekly/episodes/130 |url-status=live }}</ref>

==See also==

* [[Embedded controller]] (EC)

* [[Power management integrated circuit]] (PMIC)

* [[Power Management Unit]] (PMU)

* [[System Management Unit]] (SMU)

* [[Apple T2]]

==References==

{{reflist}}

<references/>

==External links==

*[httphttps://support.apple.com/kb/HT1237HT201518 EFI and SMC firmware updates for Intel-based Macs]

[[Category:2006Products introductionsintroduced in 2006]]

[[Category:Macintosh computers]]

[[Category:Apple Inc. hardware]]