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Thread: New Product Idea Automotive USB Hub

  1. #31
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    Well I'm planning to use powersupply's output?? Isn't it possible?? I found a 4 port usb hub that has an extra power input... power input is ofcourse 5V. And in my new system I'm planning to get 5V directly from the powersupply... This is very easy I Think. You only have to use around 5 meters of power cable and a high quality 3-5 meters of usb cable? Am I wrong??

  2. #32
    Vendor - Qube colin's Avatar
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    Its possible, that's what Im doing. I bought 2 powered hubs, one of which will be at the front of the car. I ran a 72" molex extension and a USB extension cable up there to give it power.

    Haven't installed yet, but it should work.

  3. #33
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    anyone ever try this one?

    http://www.powerstream.com/dc6.htm

  4. #34
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    MikeH

  5. #35
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    Quote Originally Posted by MikeH View Post
    seems a little overpriced especially considering it only puts out 500mA per port, I would expect more at that price range.

  6. #36
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    Quote Originally Posted by TheDrake View Post
    seems a little overpriced especially considering it only puts out 500mA per port, I would expect more at that price range.
    why would you want more than the recommended USB max per port?
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  7. #37
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    Quote Originally Posted by Sonicxtacy02 View Post
    why would you want more than the recommended USB max per port?
    To support passive hubs downstream.

    I'd be a little suspicious of using USB cables to carry more than rated power though.

  8. #38
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    Also, I just bought one.

  9. #39
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    Quote Originally Posted by Sonicxtacy02 View Post
    why would you want more than the recommended USB max per port?
    I was about to say the same thing..... If a device has to use more then that, then it will have a port on the device for its own power source. All hubs only put out 500ma per port. Its the standard for all hubs and the devices made for it.
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  10. #40
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by TheDrake View Post
    seems a little overpriced especially considering it only puts out 500mA per port, I would expect more at that price range.
    That's the maximum allowed. Not the maximum recommended, but to be USB certified it CANNOT supply more than 500mA per port. This is the best the USB standards allow for legally and safely considering the specifications regarding USB cables. (Seen those ribbon reels of USB/Cat5 cables? I think 500mA is even a stretch for some of them...)

    Quote Originally Posted by HiJackZX1 View Post
    I was about to say the same thing..... If a device has to use more then that, then it will have a port on the device for its own power source. All hubs only put out 500ma per port. Its the standard for all hubs and the devices made for it.
    Not all hubs put out 500mA. That's the max they can. If you plug a passive hub into a USB port, it can supply 500mA maximum to all devices connected to it. It cannot tell the system "I am a 5 port hub, I need 2.5A so I can supply the rest of my ports with 500mA", so it is split. Split it again and so on and so on.

    Not sure if that's what you meant, but "maximum" really needs to be used.
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