Are mobo IO region sizes consistent across all or at least most mobos?

Posted by Lucky_Luciano642@reddit | buildapc | View on Reddit | 10 comments

I'm not great with computer hardware and I want to upgrade my PC mobo and CPU. I ordered new of both earlier today, however I just had a thought that the new mobo might not fit the IO slot of my old case. Are the sizes consistent across most mobos? I'm sorry if this seems foolish, I just want to be sure.