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Office 2004 for Mac is a version of Microsoft Office designed by Microsoft for OS X, released on May 11, 2004. It was designed and written for PowerPC Macs, so Macs with Intel CPUs could only run the program under OS X's Rosetta emulation layer. For this reason, it is not compatible with OS X 10.7 and newer. As of January 10, 2012, support for Office 2004 for Mac has ended.