I just purchased the Dell XPS 13 Ultrabook and I hear a lot of high-pitched noises coming from the keyboard, i think from the right side, but hard to tell.  It is really noticable in a quite room, and isn't a solid tone, it has a super short pause in it every second or so, but overall very consistant.  It isn't the fan, and when I use Fn F2 to disable wireless/bluetooth it gets a little quiter, and seems a little more constant in the tone.  It also isn't the lighted keyboard, it still does it with that off.  It also does it when using A/C or battery.

So it might be a combination of the harddrive and wireless and bluetooth, or maybe some other circuits, but it is very annoying.  I've seem some others post online about this as well, and am hoping Dell has a way to correct this somehow, but I don't have a lot of hope that a software or firmware update can fix this.

Are others hearing this too?  I know some people are more sensitive to these types of noices, but if you put your ear to the keyboard in a quite room, you will hear it.  I can hear it when I am sitting up typing at the keyboard, I just put my ear to the keyboard to better tell where it is coming from to describe it.

Any ideas Dell?  Thanks