When you buy from Tiger Direct, if you find the item just doesn't work with your computer (but may work with some other computer that you don't have), then you are stuck. Unless the manufacturer agrees that the item you bought is defective (meaning it doesn't work at all for anyone), no refund.So I suggest not buying this mouse from Tiger Direct. As you can see from the feedback, for many people it just doesn't work. It doesn't mean it is defective necessarily, because perhaps it works with some computers. But Dell laptops seem to have an especially hard time remaining paired with it, making it useless to me. Badly designed not to work more generally, and a bad seller for not accepting returns.