I bought this drive from B&H the other day and mounted it into the Data Doubler today. The disk came in a sealed plastic wrapper, but there is one thing that concerns me: on the back of it there was no round sticker that drives usually have?? (And it usually says that if there's no sticker your warranty has been voided). Did I receive a used drive or something?? Or do all Hitachi 750GB 7200 rpm drives come without this sticker?? Please see the attached screenshot to see what part of the disk I'm referring to.