Once I got into the forums, I was able to find a way to post my original question to the appropriate sub-forum.
When I first got into this site, the interface I found did not allow me to make a post to the "general motherboard" sub forum. Instead, it only allowed me to choose from a list that had specific motherboard brands listed.
So I'm editing this post.
There should be a selection for "general motherboard" in the drop down list of possible sub-categories under the "motherboards and memory" category.