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.)
My logic board: