All of the motherboards we have, have empty asset tags. Is this 1) Normal? 2) possible to change it?!
Have a look at the Intel Integrator Assistant and Intel Integrator Toolkit that are available for your board. The answers to your above questions are both yes by the way (2 - through using these tools) but I've never really used them personally so can't comment with any experience. I believe manuals are available for how this works so have a scout around and research the topic. Sorry I can't be any more help but at least you now know the correct direction!