This connector can be found inside all Core Duo MacBooks made in 2006. It consists of a USB connection plus a connection to the power button in the top case assembly.
Pin
Number
Pin
Name
Description
1
PWR
Power Button (Shorted to ground when button pressed)
If you did publish instruction for Do-It-Yourself device with this pinout, share the link with us.
Source(s) of this and additional information: http://download.cypress.com.edgesuite.net/design_resources/datasheets/contents/cy8c24794_8.pdf http://cyrozap.com/2010/08/18/macbook-core-duo-logic-board-keyboard-connector-pinout/