|Stuart, thank you for your reply. |
As stated in my first post, I have very limited computer knowledge, therefore your explanation makes no sense to me, since these *slots* on the tower have been referred to in documentation as *com 3 or 4* or whatever.
I would never expect a beginner in my own field of expertise (and yes, I have one) to have the same level of knowledge as my own. So if you found my question dumb, I apologize.
But I found your remarks offensive, so we will consider this discussion closed.
Have a nice Friday. Thanks to others who tried to help.