The '''System Management Controller''' ('''SMC''') is an internal subsystem introduced by [[Apple, incInc.]] with the introduction of their new [[Intel]] processor based machines in 2006. It takes over the functions of the [[System management unit|SMU]]<ref>[http://docs.info.apple.com/article.html?artnum=303725 Apple general documentation on SMC Updates]</ref>. Apple has released updates for this system in order to address power or sleep issues in several recent models <ref>[http://search.info.apple.com/index.html?search=Go&lr=lang_en&kword=&khot%20OR%20kcap&news&q=SMC%20update&&type=kbdload Search of SMC Updates on Apple's knowledge base]</ref>.
