Windows not populating all drives from USB hub?

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  1. Posts : 54
    Win 10 Pro 20H2
       #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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  2. NavyLCDR's Avatar
    Posts : 15,582
    Windows 10 Pro
       #2

    Could be exceeding the power supply rating.
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  3. Posts : 54
    Win 10 Pro 20H2
    Thread Starter
       #3

    NavyLCDR said:
    Could be exceeding the power supply rating.
    For what?
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  4. NavyLCDR's Avatar
    Posts : 15,582
    Windows 10 Pro
       #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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  5. sygnus21's Avatar
    Posts : 5,477
    Win 10 Pro (x64) 20H2 (19042.928)
       #5

    It'd be nice to know what hub (link?) the OP talking about before providing any guesswork.
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  6. Posts : 54
    Win 10 Pro 20H2
    Thread Starter
       #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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  7. NavyLCDR's Avatar
    Posts : 15,582
    Windows 10 Pro
       #7

    Are you charging anything on the charge only ports?
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  8. Posts : 54
    Win 10 Pro 20H2
    Thread Starter
       #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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  9. NavyLCDR's Avatar
    Posts : 15,582
    Windows 10 Pro
       #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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  10. CountMike's Avatar
    Posts : 18,442
    W10+Developer Insider + Linux
       #10

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