......It should be stated that for this modd on the P4C800's motherboards, the location of the "ADP3180"chip is found "UNDER" the left side of the CPU/HeatSink bracket. >>>this, you must remove first to locate, and access to the soldering point's; then replace bracket.......etc......etc......[ just my 2 bit's worth of helping for any who can't see it; compared to the P4P800--board's, (which the chip sit's just outside of the bracket).......... ......... ..........