Thunderbolt docks and bus power

Discussion in 'MacBook Pro' started by mikerahl, Jan 28, 2015.

  1. mikerahl macrumors newbie

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    Dec 10, 2014
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    #1
    Anyone know if any of the currently available Thunderbolt Docks or Thunderbolt 2 docks can be run using purely bus power (powering from the thunderbolt port rather than the AC adapter)?
     
  2. SkimMilk168 macrumors regular

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    Mar 19, 2014
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    Singapore
    #2
    I think if you are running minimum connected devices, you should be able to do it.

    But, the nature being a dock for connecting multiple devices, I don't see why you wouldn't need a power supply to power the devices and keep the connection stable?
     
  3. mikerahl thread starter macrumors newbie

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    #3
    It's more for the flexibility. I like having a dock when I'm traveling to mount up a couple of peripherals (say a spare SSD, a storage drive, and a mouse), and the dock looks really practical as it wouldn't tie down my USB ports, not to mention being much better positioned than the USB ports. I was thinking the dock would be ideal for this reason.
     
  4. yjchua95 macrumors 604

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    #4
    The TB2 port itself isn't strong enough to power any dock available.
     
  5. mikerahl thread starter macrumors newbie

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    #5
    Ok, so it's not like a USB3 hub, which can be fully bus powered. Thanks for that, answers my question.
     
  6. yjchua95 macrumors 604

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    #6
    Even a USB 3 hub has to be bus-powered once you fill up the entire hub with external drives.
     
  7. mikerahl thread starter macrumors newbie

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    #7
    Surprisingly that hasn't been an issue for me. I load the USB hub up with 1 mouse, 1 external HD, 1 external SSD and a USB3 flash drive (with a full SSD inside) and I have no issues at all with stability.
     
  8. SkimMilk168 macrumors regular

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    #8
    What hub are you using? The one I have can't support 2 external hdds running on bus only.
     
  9. chrfr macrumors 603

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    Jul 11, 2009
    #9
    I haven't seen any TB or TB2 hubs that will do this.
     
  10. Freyqq macrumors 68040

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    Dec 13, 2004
    #10
    I don't know why you would want it to be bus powered. It would put a strain on your rmbp, as now it has to supply all that power.
     
  11. katit macrumors newbie

    Joined:
    Mar 15, 2015
    #11
    Any recommendation for TB dock? Ideally it would be something simple, I just need KVM+speakers pretty much. So, couple USB3s, speakers and Display port would be enough.

    I understand Apple does not allow charging cables to be manufactured by 3rd party, so they always kind of "in holder".

    P.S. This is for 13" MBPr
     
  12. yjchua95 macrumors 604

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    GVA, KUL, MEL (current), ZQN
    #12
    I've been using a CalDigit Thunderbolt dock for quite a while now and am very pleased with it.
     

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