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Identify this component/interface on logic board?

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What is the component/interface port directly above the bluetooth/air card on this logic board?? Is this an interface that can be utilized for technical diagnosis?

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@dcfd855 that is reference designator J5100. It is used as LPC+SPI Debug Connector. Definition for those are Low pin count(LPC) Serial peripheral interface(SPI). Looks like an Apple way to debug the logic board. Hope this helps, good luck.

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