2009 Mac Pro 4,1 -5,1 2 x 3.33ghz CPU Tray and 20gig Ram

2009 Mac Pro 4,1-5,1 2x 3.33Ghz Cpu Tray with 20gig Ram. Pulled from a working 2009 Mac Pro. 2 x X5680 Intel Xeon CPU. This tray will only work on a 2009 Mac Pro. Your 2009 Mac Pro must be flashed to 5,1 and have done additional firmware updates.

Please google, if you aren't sure. This tray will not work in a 2010 or 2012 Mac Pro. It will lead to the CPU fans running at full speed and the noise will drive you insane!!