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Thread: power to USB stays on during hibernate

  1. #11
    phc
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    So what did you end up doing?

  2. #12
    Maximum Bitrate S4Per's Avatar
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    I have the exact same thing. It's not the hub - it's the motherboard. I have a Shuttle SB61G2 and called them up. "Why does your motherboard still supply power to the USB bus after the machine is turned off?", Answer: "It uses 5v and that's how we power the internal clock, etc. You'll see that many new motherboards do this". "Can I turn that off?" Answer: "No".

    So far, the drain on the battery hasn't been too bad (no starting issues, the car is driven at least every other day, I've had the PC in the car for 2 weeks), but I imagine I'll pay the price in the long run.

  3. #13
    Low Bitrate
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    isn't the internal clock run maintained by the cmos battery? i always thought so...

  4. #14
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    Quote Originally Posted by cybermob2
    isn't the internal clock run maintained by the cmos battery? i always thought so...
    Many new motherboards don't have the battery anymore.

  5. #15
    Maximum Bitrate S4Per's Avatar
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    FYI: see my post about 'solved: usb bus stays on...' 2 relays did the trick for me.

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