Windows not populating all drives from USB hub?

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  1. amancandance
    Posts : 58
    Win 10 Pro 20H2
       New #1

    Windows not populating all drives from USB hub?


    Have an externally powered 10 slot USB hub that windows is having trouble dealing with. It only seems to recognize 4 or 5 attached drives and that will change(the amount recognized) depending on which USB slot the hub is connected to on my PC. All are USB 3.0 both on the Hub and PC. The drives are a mixture of ext. powered 3.5" HDD and 2.5" HDD and are all operating normally. Any idea what the issue could be? Thanks.

    EDIT: Solution in post #12
    Last edited by amancandance; 27 Mar 2020 at 12:12.
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  3. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #2

    Could be exceeding the power supply rating.
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  4. amancandance
    Posts : 58
    Win 10 Pro 20H2
    Thread Starter
       New #3

    NavyLCDR said:
    Could be exceeding the power supply rating.
    For what?
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  6. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #4

    amancandance said:
    For what?
    You say you have a powered USB hub. What is the amp rating of the power supply for the USB hub? Let's say it is 2 amps. If you have 4 devices plugged in, each drawing 500mA, as an example, you are at the max limit of the power supply. Plug in a 5th device and you will have problems because you will be exceeding the limits of the power supply.
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  7. sygnus21
    Posts : 5,899
    Win 11 Pro (x64) 22H2
       New #5

    It'd be nice to know what hub (link?) the OP talking about before providing any guesswork.
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  8. amancandance
    Posts : 58
    Win 10 Pro 20H2
    Thread Starter
       New #6

    sygnus21 said:
    It'd be nice to know what hub (link?) the OP talking about before providing any guesswork.
    Atolla USB 3.0 Hub Powered, 11-Port USB 3.0 Extension: Amazon.co.uk: Electronics

    - - - Updated - - -

    NavyLCDR said:
    You say you have a powered USB hub. What is the amp rating of the power supply for the USB hub? Let's say it is 2 amps. If you have 4 devices plugged in, each drawing 500mA, as an example, you are at the max limit of the power supply. Plug in a 5th device and you will have problems because you will be exceeding the limits of the power supply.
    So it doesn't matter if the devices attached have their own power supply?
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  9. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #7

    Are you charging anything on the charge only ports?
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  10. amancandance
    Posts : 58
    Win 10 Pro 20H2
    Thread Starter
       New #8

    NavyLCDR said:
    Are you charging anything on the charge only ports?
    No, but apparently all the slots charge devices anyway and that red/blue LED stuff is just some RGB nonsense. Also, if I turn off the individual USB slots on the hub and then back on, the drive will not display in file manger.
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  12. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #9

    amancandance said:
    No, but apparently all the slots charge devices anyway and that red/blue LED stuff is just some RGB nonsense. Also, if I turn off the individual USB slots on the hub and then back on, the drive will not display in file manger.
    It does not sound power related to me, then. I've never used a USB hub like that with several drives plugged in, so I can't help any more. Except maybe have you loaded any chipset or USB drivers available from the manufacturer of your motherboard?
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  13. CountMike
    Posts : 19,518
    W11+W11 Developer Insider + Linux
       New #10

    All devices plugged in a USB HUB share one USB port.
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