I VERY VERY HIGHLY doubt that I'm going to be killed by any of the outputs of a PSU. As a matter of fact, I've PURPOSEFULLY grabbed onto a 450V DC power supply and came out of it with nothing more than a few blisters. If I can do that, I don't think I'm gonna get hurt by the outputs of a PSU. Now, if I were to open up the case, plug it in and start touching stuff, then yeah, I'm gonna get hurt.