On Fri, 2010-03-19 at 10:22 -0400, ka1ifq wrote: > Does the cable you are using have all 4 wires? Some cables are made > for data xfer only. try using the cable you have with a usb charger > and see if it works. I had a similar problem with a phone and it was > the cable I was using. USB cables have four wires and a shield. Two of those wires are used for power, two for data. I've *NEVER* seen a cable that only has data wires, and it would be a seriously bad idea to attempt it. The shield isn't a data ground, and shouldn't be used that way. And there's ZERO way that such a cable could be used to power/charge anything. On the other hand, there are cables that are power-only, which don't carry the data wires. And these can be used, though will only be reliable with low power devices. Some power-only cables short the data pins together at the plug, and that's used as a way to tell *some* USB hosts to supply high current to the socket (only a newish host would support doing this). A more sane solution would be for them to put a small USB chip in the plug that properly negotiates high power modes from any USB host. Various device, such as some hard drives, come with a cable that plugs into two USB ports at the same time. If they're so badly built that they simply short the power lines together from two USB sockets, as some are said to do, then you stand a really good chance of destroying the host. -- [tim@localhost ~]$ uname -r 2.6.27.25-78.2.56.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
