I find it really hard to believe that Hillary did not know that it is illegal to set up her personal system, or to take classified material out of a secure environment. She was reminded by the annual training that everyone receives. OTOH, the warning that comes up whenever someone accesses a government IT system probably didn't remind her, since she never would have seen it.
Even if we took this on face value, one must question the wisdom of even considering a negligent person for the important office of president. Her "negligence" led to the deaths in Benghazi, and will lead to other deaths if she is placed in a position with that much responsibility.