Even though I know that the Pro version uses MCP-T and Pro2 uses MCP southbridge, I do not understand the difference between the two. All the features of Pro is available in Pro2, I think. I have ordered a Pro version and received Pro2. I am debating myself whether to return it or not. What do you guys think? For me the second network port is not too important. But I would really like to run my CPU at lower voltages to make sure it runs cool. I heard that 7N400 's set the default voltage to a bit higher than the nominal.