THIS IS AN EXCHANGE PART FROM APPLE LIKE NEW CONDITION
This is a replacement power supply for the Mac Pro:

Mac Pro (Early 2009)
MB871LL/A, MB535LL/A A1289

Mac Pro (Mid 2010)
 MC250, MC561LL/A A1289

Mac Pro Server (Mid 2010)
MC915LL/A A1289

Mac Pro (Mid 2012)
 MD770LL/A (Quad-Core), MD771LL/A (12-Core)

Mac Pro Server (Mid 2012)
MD772LL/A A1289