However, we hear, as opposed to the original power supply, loading the current Eee PC a high-pitched tone from the power supply. With the windows open, running television, on the train, etc. that is not disturbing, but in a quiet room, I find it almost disturbing (but also have the physician certifies an excellent for my age get Heard).
This pipe is not heard when the Eee PC is loaded on 100%, if it is in any one of the sleep states (Sleep, Hibernate) or was completely turned off. Andersrum said, you can hear it only when you are working with does not fully charged battery pack.
