Tivo mini high pitch squeel

I got a mini a few days ago at best buy. Everything has been working well with the mini. Today I noticed with the TV off a noise coming from the mini. Its a whine but kind of a squeel as well. I can only hear it when I'm about 3 or so feet away. It reminds me of a ground loop issue but even when its the only thing plugged in it makes the noise... Has anyone else had this problem? Do you think its fine? The noise isn't annoying due to being so far from me and on being so high pitched. I'm only worried it might break before the warranty ends. Anyone else have this problem?