Mac OS Compatibility Guide for iMac

Which versions of macOS does my iMac support?

MacBook Pro ModelsmacOS Big SurmacOS Catalina macOS MojavemacOS High Sierra macOS Sierra OS X El CapitanOS X Yosemite OS X Mavericks OS X Mountain Lion Mac OS X Lion Mac OS X Snow Leopard Mac OS X LeopardMac OS X Tiger
1110.15 10.14 10.1310.12 10.11 10.10 10.9 10.8 10.7 10.6 10.510.4
iMac (Retina 5K, 27-inch, 2020)YesYesNoNoNoNoNoNoNoNoNoNoNo
iMac (Retina 5K, 27-inch, 2019)YesYesYesNoNoNoNoNoNoNoNoNoNo
iMac (Retina 4K, 21.5-inch, 2019)YesYesYesNoNoNoNoNoNoNoNoNoNo
iMac Pro (2017)YesYesYesYesNoNoNoNoNoNoNoNoNo
iMac (Retina 5K, 27-inch, 2017)YesYesYesYesYesNoNoNoNoNoNoNoNo
iMac (Retina 4K, 21.5-inch, 2017)YesYesYesYesYesNoNoNoNoNoNoNoNo
iMac (21.5-inch, 2017)YesYesYesYesYesNoNoNoNoNoNoNoNo
iMac (Retina 5K, 27-inch, Late 2015)YesYesYesYesYesYesNoNoNoNoNoNoNo
iMac (Retina 4K, 21.5-inch, Late 2015)YesYesYesYesYesYesNoNoNoNoNoNoNo
iMac (21.5-inch, Late 2015)YesYesYesYesYesYesNoNoNoNoNoNoNo
iMac (Retina 5K, 27-inch, Mid 2015)YesYesYesYesYesYesYesNoNoNoNoNoNo
iMac (Retina 5K, 27-inch, Late 2014)YesYesYesYesYesYesYesNoNoNoNoNoNo
iMac (21.5-inch, Mid 2014)YesYesYesYesYesYesYesYesNoNoNoNoNo
iMac (27-inch, Late 2013)NoYesYesYesYesYesYesYesYesNoNoNoNo
iMac (21.5-inch, Late 2013)NoYesYesYesYesYesYesYesYesNoNoNoNo
iMac (21.5-inch, Early 2013)NoYesYesYesYesYesYesYesYesNoNoNoNo
iMac (27-inch, Late 2012)NoYesYesYesYesYesYesYesYesNoNoNoNo
iMac (21.5-inch, Late 2012)NoYesYesYesYesYesYesYesYesNoNoNoNo
iMac (21.5-inch, Late 2011)NoNoNoYesYesYesYesYesYesYesYesNoNo
iMac (27-inch, Mid 2011)NoNoNoYesYesYesYesYesYesYesYesNoNo
iMac (21.5-inch, Mid 2011)NoNoNoYesYesYesYesYesYesYesYesYesNo
iMac (27-inch, Mid 2010)NoNoNoYesYesYesYesYesYesYesYesYesNo
iMac (21.5-inch, Mid 2010)NoNoNoYesYesYesYesYesYesYesYesYesNo
iMac (27-inch, Late 2009)NoNoNoYesYesYesYesYesYesYesYesYesNo
iMac (21.5-inch, Late 2009)NoNoNoYesYesYesYesYesYesYesYesYesNo
iMac (20-inch, Mid 2009)NoNoNoNoYesYesYesYesYesYesYesYesYes
iMac (24-inch, Early 2009)NoNoNoNoNoYesYesYesYesYesYesYesYes
iMac (20-inch, Early 2009)NoNoNoNoNoYesYesYesYesYesYesYesYes
iMac (24-inch Early 2008)NoNoNoNoNoYesYesYesYesYesYesYesYes
iMac (20-inch Early 2008)NoNoNoNoNoYesYesYesYesYesYesYesYes
iMac (24-inch Mid 2007)NoNoNoNoNoYesYesYesYesYesYesYesYes
iMac (20-inch Mid 2007)NoNoNoNoNoYesYesYesYesYesYesYesYes
iMac (24-inch)NoNoNoNoNoNoNoNoNoYesYesYesYes
iMac (20-inch Late 2006)NoNoNoNoNoNoNoNoNoYesYesYesYes
iMac (17-inch Late 2006)NoNoNoNoNoNoNoNoNoYesYesYesYes
iMac (17-inch Late 2006 CD)NoNoNoNoNoNoNoNoNoYesYesYesYes
iMac (Mid 2006 17-inch)NoNoNoNoNoNoNoNoNoNoYesYesYes
iMac (Early 2006 20-inch)NoNoNoNoNoNoNoNoNoNoYesYesYes
iMac (Early 2006 17-inch)NoNoNoNoNoNoNoNoNoNoYesYesYes
iMac G5 (20-inch iSight)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac G5 (17-inch iSight)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac G5 20-inch (Ambient Light Sensor)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac G5 17-inch (Ambient Light Sensor)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac G5 (20-inch)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac G5 (17-inch)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac (20-inch USB 2.0)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac (17-inch USB 2.0)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac (15-inch USB 2.0)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac (17-inch Flat Panel, 1GHz)NoNoNoNoNoNoNoNoNoNoNoYesYes
iMac (15-inch Early 2003)NoNoNoNoNoNoNoNoNoNoNoNoYes
iMac (17-inch Flat Panel)NoNoNoNoNoNoNoNoNoNoNoNoYes
iMac (Flat Panel)NoNoNoNoNoNoNoNoNoNoNoNoYes
iMac (Summer 2001)NoNoNoNoNoNoNoNoNoNoNoNoYes
iMac (Early 2001)NoNoNoNoNoNoNoNoNoNoNoNoYes
iMac/iMac DV/iMac DV+/iMac DV SE (Summer 2000)NoNoNoNoNoNoNoNoNoNoNoNoNo
iMac/iMac DV/iMac DV SE (Slot Loading)NoNoNoNoNoNoNoNoNoNoNoNoNo
iMac (5 Flavors)NoNoNoNoNoNoNoNoNoNoNoNoNo
iMacNoNoNoNoNoNoNoNoNoNoNoNoNo