Reinstallation requires thermal paste. Has 2 more holes and slightly different spacing for the battery connector than Energy Star Mid 2007 logic boards.
Note: the non-ES battery connectors have 2 more pins and different spacing than the ES models. To determine which board you have, remove the upper case and check to see if the words "Energy Star" are printed on the board in the second RAM slot.
This logic board only works on machines that do not have Energy Star printed on the board.