Apple Mac Pro 5,1 2010 Backplane Logicboard Motherboard 639-0461 631-1427
This board was pulled from 2010 Mac Pro that was parted out. This will only work in the 2010-2012 Mac Pro, it willNOT work in the 2009 or other Mac Pros. This has been upgraded to the 144.0.0.0.0 firmware.