Anyone know why two brand new HD enclosures for 3.5" SATA drives would up and die within the first three to four hours of being powered on? I bought these brand new to replace the two previous enclosures. They are SATA to USB 2.0. Had both of them working just fine and plugged in to a powered hub. The power supplys appear to work fine, but the power lights on the drives are now off. Plugging them in to USB simply results in the enclosure trying to draw power from the USB port instead of the power supply. I have plugged both supplys directly into a socket, the lights on the supplys themselves are on, but nothing. The two previous drive enclosures lasted eight years so I don't think I have hard drives that are eating enclosures. When they were working earlier tonight they seemed just fine. It took me a week and a half to get these enclosures so I'd rather not have to send them back, but I find it hard (and I know the seller will find it hard) to believe that two enclosures were defective at the same time. Anyone got any ideas?