ah, he would have to attach it to something because the only thing that it is attached to is the motherboard; If it is not attached to the motherboard's pins, then it is not attached to anything at all.
Yes, you can remove the case speaker and keep it somewhere handy so that you can hook it up if ever your computer doesn't boot or display messages on the screen. The case speaker emitts beeps that are in a sequence when there is a bootup or hardware problem..