Chosen Solution

I need to replace my motherboard in my system What is the best way to find the right motherboard? I can’t read the model number as it’s not visible anymore. Is there another way to find the right part?

Look on the logic board on the plate right above the RAM slots. Your serial number is there. Plug it in here to find out exact what your machine is, then we can look up the part number: http://www.everymac.com/ultimate-mac-loo