OK, that title is not really a concern of mine for this post. I received the Lego trains I ordered and the box said "Caution: 12 V" or something like that, but it said 12V. I ordered the train from lego.com where the site said that it included a 9V speed regulator and a 9V motor. The speed regulator I got says 9V-12V on the hole for the power supply. The power brick says output: 10.8V AC. So, what's the deal? Did Lego mean to put a 10.8V transformer in there (seems to work fine)? Did the site and the packaging get mislabeled? I don't think Lego really cares about this type of train anymore as they're moving to radio controlled trains, which I think is an excellent move for kids as I spent a few hours laying out my track and getting it to work correctly (and I have a BS in engineering). The trick is that the track switches must be in the correct positions, you can't short circuit the track, and you must have power applied. The layout I put together has 3 concentric loops that allows the train to get to each of the loops. The problems I discovered is that the power must be on the outer loop and the 2 switches for each loop must be in opposite directions; they must also be switched at the same time to keep the train moving when it is on an inner loop. 4 years of college and I can setup a kid's toy!