I got a logic board A1286 mid-2012 non-Retina 2.7 GHz MBP.

On the board, there are two extra sockets; one is the right side of the fan connector and the other one is above the keyboard’s connector.

Mine also is A1286 2.6 GHz mid-2012 non-retina same as the new board, but the sockets of mine are empty, Should I be worried about the installation if there are no extra cables to be connected to those sockets?

New logic board: (Please enlarge the picture and see the red circles.)

New logic board

My logic board:

My logic board

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    I applaud your DIY spirit and if you don't get any helpful advice you may want to try over at ifixit.com. Some of their tear downs might mention this and there are discussion boards filled with enterprising hardware hackers both novice and experienced, as well. – Steve Chambers Apr 2 at 16:19

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