Re-plugging external USB devices after servicing your PC


  1. Posts : 182
    Xp, Vista, 7, 8.1, 10
       #1

    Re-plugging external USB devices after servicing your PC


    I was always curious, when you have to plug back all your external USB devices for your desktop (say, after you upgraded RAM, or put in a larger hard drive, or just after cleaning it) -- does it matter to remember how things were plugged in so that I can put everything back into the same USB ports?

    PS. And if yes, how do you guys memorize that? In my case, I have about 6 USB cables that are all black and look pretty much the same even if I took a picture.
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  2. f14tomcat's Avatar
    Posts : 54,765
    Multi-boot Windows 10 - RTM, RP, Beta, and Insider
       #2

    ahmd said:
    I was always curious, when you have to plug back all your external USB devices for your desktop (say, after you upgraded RAM, or put in a larger hard drive, or just after cleaning it) -- does it matter to remember how things were plugged in so that I can put everything back into the same USB ports?

    PS. And if yes, how do you guys memorize that? In my case, I have about 6 USB cables that are all black and look pretty much the same even if I took a picture.
    In general, it makes no difference. USB 2.0 should go back into USB 2.0, and likewise for USB 3.x. Other than that, no difference. Just remember not to mix-match. If they all worked before, they will all function the same afterward.
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  3. Berton's Avatar
    Posts : 11,226
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #3

    The only issue I've seen is that sometimes USB 2 devices don't always work properly in USB 3 ports even though USB 3 is supposed to 'fall back' to USB 2 compatibility.
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  4. Posts : 182
    Xp, Vista, 7, 8.1, 10
    Thread Starter
       #4

    OK, I see. Thank you, both.

    So the bottom line is not to mix USB-2 and USB-3 devices, and the rest doesn't matter, right?
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  5. f14tomcat's Avatar
    Posts : 54,765
    Multi-boot Windows 10 - RTM, RP, Beta, and Insider
       #5

    ahmd said:
    OK, I see. Thank you, both.

    So the bottom line is not to mix USB-2 and USB-3 devices, and the rest doesn't matter, right?
    That is correct. As Berton mentioned, 3.0 is supposed to be 2.0 backward compatible, but it's not always quite true. The oddest quirks can pop up plugging, say a 2.0 USB printer connector into a 3.0. Best not to mix-match unless you have no choice.
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  6. Steve C's Avatar
    Posts : 6,651
    Windows 10 Pro 64 bit
       #6

    Windows will work it out but ensure you connect your high speed devices to the USB 3.0 ports
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  7. Berton's Avatar
    Posts : 11,226
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #7

    And do make note of any marking for the USB port, the "trident" is for USB 2 known as High Speed and the marking for USB 3 will include SS to indicate Super Speed.
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