This is simply the latest and greatest wireless adapter available for the Mac Pro, and is 100% compatible with all generations of Mac Pros. OS X 10.5.6 or later is required.
Compatibility Minimum Requirement: OS X 10.5.6 or later is required.
This Airport Extreme Card is compatible with all Mac Pros: Mac Pro 1st generation, 2006, Mac Pro 2nd generation, 2007, Mac Pro 3rd generation, 2008, Mac Pro, 4th generation, 2009.
To find your Mac Pro model, click on the Apple logo in the upper left corner of your screen, then About This Mac, then More Info... The Model Identifier will be MacPro1,1 or MacPro2,1 or MacPro3,1 or MacPro4,1. This indicates the different generations. Mac Pro
5th generation (2010) includes wireless functionality built in. Package Includes: 1x Brand New Apple MB988Z/A Airport card, 2x Installation Screws