[help]ipod touch doesn't charge in usb hub?

Discussion in 'iPod touch' started by sonagi, Jan 25, 2009.

  1. sonagi

    sonagi New Member

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    I wonder if anyone else has this issue ...

    Attached to my laptop is a 4 port USB hub (reference photo: http://www.amazon.com/gp/product/B000RZUV9S/ref=cm_cr_mts_prod_img).

    However, whenever I plug in my touch to one of the ports, my battery icon keeps flickering between the "charging" icon and the "unplugged" icon. i tried a different multi hub port and got the same results (and if i unplug the hub and just stick the ipod touch directly into the laptop, it charges fine). Anyone experience this? Anybody solve this problem?

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  2. Matt-09

    Matt-09 New Member

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    A hub doesn't supply enough power. Use a normal USB port.
  3. thechungster

    thechungster Super Moderator Emeritus

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    You have to connect it directly to the PC, I only recently found out when I tried plugging it to a friend's USB hub, it didn't work. Remember, it has to be USB 2.0
  4. Ryan

    Ryan Well-Known Member

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    yeah, probably a mixture of the fact that it cant get power to it and also that its not usb 2.0 which means it isnt fast enough to supply it.
  5. jlgm25

    jlgm25 Well-Known Member

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    guys, my brother has that with his macbook air. and yes i can charge with it. maybe its the cable?
  6. Colonel Ham Sandwich

    Colonel Ham Sandwich New Member

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    The Cable is probably broken, try getting a new ne
  7. iCrap

    iCrap Active Member

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    the hub isnt powered so it cant supply the full 5.5v
    it dosent matter if its usb 2 or 1 if all you want to do is charge
  8. sonagi

    sonagi New Member

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    in terms of usb 2.0 vs usb 1.0, i have to agree with iCrap - that aspect doesn't make a difference. but before i buy the not enough power-supply argument, i wonder if there are any circuits within the hub that's connected in series rather than parallel, and as a result dropping voltage...
    also, why would the ipod flicker? Alternative Current?
  9. Deadhead

    Deadhead New Member

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    I believe it's actually less of a voltage issue and more one of current starvation of the device. Yes in a parallel circuit (non-powered hub)you have the same voltage to each device, but if I remember correctiy, curent is divided across each port. So while the computer provides sufficient power, the hub is not capable of supplying the device with everything it needs. This low amperage is most likely the source of the flicker. While the device tries to charge because it gets the voltage it expects, it then fails to charge because of the amp. starvation. Low power causes weird results. After all, amperage kills people, not voltage.
  10. sonagi

    sonagi New Member

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    well put deadhead ... so the electric potential is there, but the flow of + carriers is not. cheers mate, and you get a beer

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