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OTG via OnePlus 9R

  1. mavins
    Donut May 11, 2021


    #1
  2. Swejuggalo
    OnePlus 9 Series Expert Community Expert May 11, 2021


    #2
    Tokolozi likes this.
  3. mavins
    Donut May 11, 2021


    #3
  4. Swejuggalo
    OnePlus 9 Series Expert Community Expert May 11, 2021


    #4
    Tokolozi and Bobbie63 like this.
  5. mavins
    Donut May 11, 2021


    #5
  6. Tokolozi
    Most Original Avatar May 11, 2021

    Tokolozi , May 11, 2021 :
    If it reads the pen drive, but not the hard drive, it most likely can't supply enough power to turn the HDD successfully.
     

    #6
  7. mavins
    Donut May 11, 2021


    #7
  8. Tokolozi
    Most Original Avatar May 11, 2021

    Tokolozi , May 11, 2021 :
    An HDD needs to spin at higher speeds, the light does not indicate it.

    For HDD's its best to use flash drives, or drives with external power. It could be that the 5t could supply slightly more power via OTG, but the 9R can't.
     

    #8
  9. mavins
    Donut May 11, 2021


    #9
  10. Tokolozi
    Most Original Avatar May 11, 2021

    Tokolozi , May 11, 2021 :
    The official maximum on current provided on USB 2 OTG port is 500mA and minimum is 8mA when the port is in Host mode.

    Since the standard has such a wide operating window, it can be that the 9R does only support 250mA... Where the harddrive might need 500mA.

    In general I would not recommend HDD's for OTG, they're slow, mechanical and use a lot of power.

    OTG's main purpose was developed around lower current situation such as flash storage or peripherals.
     

    #10