I purchased the Dell J660D mouse as part of my current system about 2 years ago. Within the last year, it began to randomly turn off and on during use for no apparent reason. I tried plugging it into various USB ports and different machines, and even reinstalling the drivers with the same results. Finally, today it died. I was wondering if the mouse was covered under my warranty (5 year) and could be replaced at no charge to me, or whether I would need to purchase a new one on my own. Also, if Dell will replace the mouse for me, is it still possible to get one the same or very similar? Thanks.