when u are trying to mounting a mobo on the panel or right to the case, where do u put those little red circles(the ones that stop the metal on metal contact between the mounting screws and the mobo), under the mobo or top.
Nomally there are copper busses that seperate the mobo from the backplate has a aluminium/tin? ring around each hole in the PCB, which is not connected to the internal wireing of the board.