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Thread: Would I break something if...

  1. #1
    Drop it like it's hot Howard's Avatar
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    Would I break something if...

    ..I butchered a USB cable and re-routed the 5v power to a USB device (Matrix Orbital LCD) from the USB port, to a 5v output from a molex connector for example? Would that play havoc with the USB device being detected, or make something go bang in a plume of smoke?

    The reason I want to do this is that my mobo always provides power to USB when the PC is off and there's no way to disable this as far as I can see, so I'm trying to think of possible solutions
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  2. #2
    radix lecti dave87's Avatar
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    If you get the right wire, I can't see a problem with it.

    But I thought the USB connection was also the way the device communicated to the PC?

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    Senior Member Pob255's Avatar
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    You know you could always try the swtich on the wall socket once you've shut down your pc

  4. #4
    radix lecti dave87's Avatar
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    ....and then his BIOS battery would be dead in months not years....

  5. #5
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    Quote Originally Posted by Howard View Post
    ..I butchered a USB cable and re-routed the 5v power to a USB device (Matrix Orbital LCD) from the USB port, to a 5v output from a molex connector for example? Would that play havoc with the USB device being detected, or make something go bang in a plume of smoke?

    The reason I want to do this is that my mobo always provides power to USB when the PC is off and there's no way to disable this as far as I can see, so I'm trying to think of possible solutions
    Can you turn off wake from keyboard/mouse or usb in the BIOS ? This might be what keeps them on.

  6. #6
    Drop it like it's hot Howard's Avatar
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    Quote Originally Posted by dave87 View Post

    But I thought the USB connection was also the way the device communicated to the PC?
    Yeah I was talking about taking the two power wires only though (or even only one, the +5v wire), and leaving the other two data wires connected to the USB socket.


    And yes I could turn it off at the back of the PSU, but that's not suitable for the lazyman such as myself



    Quote Originally Posted by tinners View Post
    Can you turn off wake from keyboard/mouse or usb in the BIOS ? This might be what keeps them on.
    nope.
    Home cinema: Toshiba 42XV555DB Full HD LCD | Onkyo TX-SR705 | NAD C352 | Monitor Audio Bronze B2 | Monitor Audio Bronze C | Monitor Audio Bronze BFX | Yamaha NSC120 | BK Monolith sub | Toshiba HD-EP35 HD-DVD | Samsung BD-P1400 BluRay Player | Pioneer DV-575 | Squeezebox3 | Virgin Media V+ Box
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  7. #7
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    irrelevant post deleted

  8. #8
    Drop it like it's hot Howard's Avatar
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    Sorry it's not my NF7 It's the Gigabyte board in my HTPC
    Home cinema: Toshiba 42XV555DB Full HD LCD | Onkyo TX-SR705 | NAD C352 | Monitor Audio Bronze B2 | Monitor Audio Bronze C | Monitor Audio Bronze BFX | Yamaha NSC120 | BK Monolith sub | Toshiba HD-EP35 HD-DVD | Samsung BD-P1400 BluRay Player | Pioneer DV-575 | Squeezebox3 | Virgin Media V+ Box
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  9. #9
    radix lecti dave87's Avatar
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    Tinners, perhaps you could leave the info in there, as other people may have similar issues, and that might be helpful in the future...

  10. #10
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    Quote Originally Posted by dave87 View Post
    Tinners, perhaps you could leave the info in there, as other people may have similar issues, and that might be helpful in the future...
    i thought that just as i deleted it. Basically on the NF7 you need to change some jumpers on the mobo which turns the USB ports from powered / wake uppable to not powered.

  11. #11
    Editable... jimbouk's Avatar
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    Yeah most motherboards have jumpers for power on USB, but they're not always mentioned in the manual.

    Or you could always just buy a couple of spare battering for a few pounds. The Small Battery Company are quick and cheap.

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