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15" & 17" (Mid 2010), 13"/15"/17" (Early/Late 2011), Mid 2012, and Retina models through Early 2013 Early 2009, Mid 2010, Mid 2012, and Late 2013 Mid 2011, Late 2012 21.5" & 27" (Mid 2010, Mid 2011, Late 2012, Early 2013) 4. Installation Procedure
Copy the entire contents of the unzipped folder (including the BootCamp folder and setup.exe ) to the root level of your USB drive. bootcamp5.1.5621.zip