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    USB Hub blows up the USB port

    Discussion in 'Accessories' started by Nocturnal310, Aug 18, 2008.

  1. Nocturnal310

    Nocturnal310 Notebook Virtuoso

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    I have this old usb hub that i was using for past month...it was underpowered so i tried an AC adapter to power it up...the moment i inserted the AC adapter into the hub..a blue LED bulb went off with a click sound..

    and my entire usb port no.3 is dead on the laptop.


    I supplied 9v to a 5-6 V hub..not that big to damage a usb port is it?
     
    Nocturnal310, Aug 18, 2008
    #1
  2. Greg

    Greg Notebook Nobel Laureate

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    You supplied 9V to a 5V hub...that's plenty enough to destroy anything. Not to mention the power could easily backup into your laptop which explains your #3 failure.

    That part of your motherboard is toast, and you can kiss the hub goodbye.
     
    Greg, Aug 18, 2008
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  3. 72hundred

    72hundred Revolutions-Per-Millennia

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    :confused: :confused: :confused: What did you expect to happen? It would run 50% faster!
     
    72hundred, Aug 18, 2008
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  4. Greg

    Greg Notebook Nobel Laureate

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    Does a square peg usually fit into a round hole?

    Does a 9V supply usually work with a 5V part?
     
    Greg, Aug 18, 2008
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  5. ViciousXUSMC

    ViciousXUSMC Master Viking NBR Reviewer

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    voltage is one of those things that usually electronics will only take what they need. It was the amps that broke it probably.
     
    ViciousXUSMC, Aug 18, 2008
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  6. Greg

    Greg Notebook Nobel Laureate

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    Trust me...that PSU was giving the USB port 9V.
     
    Greg, Aug 18, 2008
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  7. Ayle

    Ayle Trailblazer

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    Was it supposed to be a powered hub, or did you mate an electric cable with a usb plug???
     
    Ayle, Aug 18, 2008
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  8. Nocturnal310

    Nocturnal310 Notebook Virtuoso

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    It was a Powered hub supplied with an adaptor...i just used an adapter with Variable resistance.

    *********************** psst....censored for security & anti-lawsuit reasons***************

    But i have tried to run 1.5 V bulb on 6 V & it didnt blow..

    how come 2007 built computer's USB hub just get damaged with 4 V extra?

    hard to imagine..anyway. thanks for the input
     
    Nocturnal310, Aug 18, 2008
    #8
  9. flipfire

    flipfire Moderately Boss

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    Claiming warranty for damage you caused would be fraud. I suggest you re-edit your post. HP might be able to see if the controller is fried

    9v is nearly twice a USB's rated voltage lol. Your logic board should have blown aswell, but your lucky it took out the USB port first
     
    flipfire, Aug 18, 2008
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  10. Greg

    Greg Notebook Nobel Laureate

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    Actually, you are kind of shot in the foot anyway...post or no. Electrical damage like that isn't too difficult to spot.

    HP might just catch on to this one regardless of what is written here.
     
    Greg, Aug 18, 2008
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  11. Nocturnal310

    Nocturnal310 Notebook Virtuoso

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    Dont worry...i ll get it fixed for free.

    I ve been taken for a ride many times by several companies.
     
    Nocturnal310, Aug 19, 2008
    #11
  12. Greg

    Greg Notebook Nobel Laureate

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    Well, I guess we can call this one thread closed since you obviously expect to call this on in and blame the manufacturer (HP) and get a warranty claim.
     
    Greg, Aug 19, 2008
    #12