On Wed, 19 Sep 2007 13:14:09 +1000 "Holden Hao" <[EMAIL PROTECTED]> wrote: > BTW, the enclosure is a generic China-made product with 2 USB jacks. > Can anybody tell me why there are 2 jacks? I suspect this is for > supplying power however, it works with just the main jack plugged in.
The two jacks are usually just for power. Some laptop USB controllers don't provide sufficient power to run a hard drive off a single USB port, so there are usually two connectors available. My enclosure is the same. Plugging in the secondary connector only results in the drive getting powered but not being detected by the OS. I recently encountered a similar issue, with a -71 USB error from the kernel. It was extremely frustrating. Some deep searching revealed that the problem was probably because the USB 2.0 standard has more stringent cabling requirements than USB 1.1, and that presumably disabling USB 2.0 support would allow the rive to be used with the cable I had, albeit at extremely reduced speeds. As the drive I put in the thing is a 160 GB drive with a lot of large files, such a thing was unacceptable. Instead, I managed to find a replacement cable, and it has been working properly ever since. -- A house can be large or small; as long as the surrounding houses are equally small, it satisfies all social demands. But if a palace rises beside the little house, the little house shrinks into a hut. http://stormwyrm.blogspot.com
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