Thanks but if I can fit the 5100c motherboard in there I have future upgrade options as the 5100c motherboard has higher spec and can support better CPU's. It already comes with a better CPU and 4GB of RAM. Did I mention it is cheaper then buying a used 5100 motherboard.
Also, I've looked at the pictures of both motherboards, the only two holes that DON'T line up are the ones below/next to the CPU.
I just need to know if the CPU will line up with the CPU heatsink from a 5100.