820-1974-A 820-2203-A 922-7732 Ambient Board - 2-2.66-3GHz Quad - 3GHz 8-Core A1186 Mac Pro NB-2227W
This is the Ambient Board for the Mac Pro. This collects data such as temperature to help optimize system performance by adjusting fan speed, etc.
Apple part number: 922-7732, 820-1974-A, 820-2203-A
Compatible models: A1186-2006-MA356LL/A, A1186-2006, A1186-2006 820-1974-A, 820-2203-A
Compatible Mac info. : 2.66GHz Quad-Core Mac Pro , 3.0GHz Quad-Core Mac Pro , 3.0GHz 8-Core Mac Pro 820-1974-A, 820-2203-A
922-7732 Ambient Board - 2-2.66-3GHz Quad - 3GHz 8-Core A1186 Mac Pro 8201974A, 8202203A