USB connection heard from PC


  1. N7AS
    Posts : 169
    Windows 10 PRO
       New #1

    USB connection heard from PC


    Why is it when I plug a USB device to charge into a USB port not connected to my PC that I hear the USB connection from my PC? It's just a USB charger.
      My Computer
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  3. Matthew Wai
    Posts : 7,607
    Windows 10 Home 20H2
       New #2

    Put the charger far away from the PC and plug the device into the charger. Will you still hear the connection?
      My Computer
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  4. CountMike
    Posts : 19,518
    W11+W11 Developer Insider + Linux
       New #3

    N7AS said:
    Why is it when I plug a USB device to charge into a USB port not connected to my PC that I hear the USB connection from my PC? It's just a USB charger.
    Some PCs, mostly new-ish ones can sense load in USB port and can pass it to windows. In some PCs, some ports may be dedicated to charging and even keep power on when PC is not running. USB port sensing is also handy for PC to sense load and warn if overloaded.
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  6. N7AS
    Posts : 169
    Windows 10 PRO
    Thread Starter
       New #4

    This happens even when I charge my hearing aids from a charger that is NOT connected to my PC. It just plugs into a USB port on a power strip.
      My Computer
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  7. Matthew Wai
    Posts : 7,607
    Windows 10 Home 20H2
       New #5

    Is the PC's PSU connected to the same strip?
      My Computer
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  8. N7AS
    Posts : 169
    Windows 10 PRO
    Thread Starter
       New #6

    Matthew Wai said:
    Is the PC's PSU connected to the same strip?
    NO
    MY PC is plugged into a backup UPS. BTW we have Solar and a TESLA Powerwall that backs up the whole house. That thing cost over $7000.

    I get the connect sounds from dedicated USB chargers as well connected to another strip.
      My Computer
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