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It's worth a try, seems nothing to lose. Anyway, as long you've got the serial number, don't think they would bother, whether you've bought it or someone gave it to you.And if I'm not mistaken, US Robotics says their modem are life-time warranty-As far as I can remembered. I remembered for my case, they didn't ask me when I bought it. And it's not cheap to get a quality modem like US Robotics either .
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