Thunderbolt 3 to Thunderbolt 2 Cable

Discussion in 'MacBook Pro' started by cookieagent47, Nov 18, 2016.

  1. cookieagent47 Suspended

    Joined:
    Nov 18, 2016
    #1
    Hey!

    I was wondering if there's any thunderbolt 3 to thunderbolt cable out there.
    I'm getting my new Macbook Pro 2016 next week and I was wondering if I could use a Thunderbolt 3 to Thunderbolt 2 or HDMI or anything else to connect it to this https://www.amazon.de/gp/product/B00HG7EB64/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

    Alternatively is there any Thunderbolt 2 to Thunderbolt 3 adepters? The only thing I can find is Thunderbolt 3 to Thunderbolt 2, not the other way around
     
  2. jackoatmon macrumors 6502a

    jackoatmon

    Joined:
    Sep 15, 2011
    #2
    There's no cable unfortunately (had to chain a dongle and a cord to get the job done myself) however there's lots of dongles and hubs that can give you HDMI or whatever.
     
  3. cookieagent47 thread starter Suspended

    Joined:
    Nov 18, 2016
    #3
    Thats so unfortunate! :( Yeah dongle is the only way to go seems like.

    Were you able to find any Thunderbolt 2 to 3 dongle? Apple seems to sell only Thunderbolt 3 to 2 and not the other way around. I'm thinking about connecting the dongle to my monitor and leave it there and whenever I wanna connect it to my computer I can just insert the thunderbolt 3 cable into the dongle
     
  4. jackoatmon macrumors 6502a

    jackoatmon

    Joined:
    Sep 15, 2011
    #4
    I got a TB3->TB dongle and a short TB cord that is, as you mention, now stuck to the back of the display (which is actually a 27" iMac that's now a Target Display for when i need 2 screens.)
     
  5. cookieagent47 thread starter Suspended

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    Nov 18, 2016
    #5
    Cool, thanks :) Gonna do the same I guess
     
  6. sinoka56 macrumors regular

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    Jun 13, 2013
    #6
    do note that tb3 to tb2 is NOT the same as tb3 to displayport
     
  7. cookieagent47 thread starter Suspended

    Joined:
    Nov 18, 2016
    #7
    Thanks for the clarification :)
     
  8. therealseebs macrumors 65816

    therealseebs

    Joined:
    Apr 14, 2010
    #8
    So, just to make it really clear:

    The TB3 to TB2 cable WILL NOT WORK WITH ANY DISPLAY. None. It is not a display cable.

    If you want to connect to a display, you probably want something like TB3<->displayport, but USB-C<->displayport is probably just as good, as long as it supports the alt mode thing to let the video signal go over the cable without interfering with the USB/TB3 data bandwidth. (Same for HDMI.)
     
  9. Brookzy macrumors 601

    Brookzy

    Joined:
    May 30, 2010
    Location:
    UK
    #9
    It will.

    You can use it to connect a Thunderbolt 3 device to a Thunderbolt display, for example the Apple 27" Thunderbolt Display.

    Screen Shot 2016-11-20 at 01.18.46.png
     
  10. Alfredo's macrumors newbie

    Joined:
    Nov 19, 2016
    #10
    I dealt with a Apple Support on this today, and no it doesn't work with the dongle. I have the Apple thunderbolt Display Gen 1 - the one with the DisplayPort. Apple support had no idea why, they blamed it on the dongle. I think it doesn't support it. I need a USB-C to DisplayPort cable or adapter
     
  11. Brookzy macrumors 601

    Brookzy

    Joined:
    May 30, 2010
    Location:
    UK
    #11
    Then it is an issue specific to you. This adapter most certainly supports Thunderbolt-driven displays.

    Are you sure you don't actually have a Cinema Display?
     
  12. therealseebs macrumors 65816

    therealseebs

    Joined:
    Apr 14, 2010
    #12
    I will concede that it's possible that some displays are using a special connection which isn't an actual video connection, but uses something else to move video bits. But that's a pretty special case, and I don't think I've heard of anything other than the thunderbolt display doing it.
     
  13. Alfredo's macrumors newbie

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    Nov 19, 2016
    #13
    Yes, I meant the LED Cinema Display. The mini display port will not work with the TB2 - TB3 adapter.
     
  14. Wowereit macrumors 6502a

    Joined:
    Feb 1, 2016
    Location:
    Germany
    #14
    This might be confusing for consumers.

    Thunderbolt 3 and USB-C share the same connector.
    Thunderbolt 1/2 and mini Display Port share the same connector.

    Thunderbolt 3 doesn't support USB-C Display Port Alternate Mode and USB-C doesn't support Thunderbolt 2, but Thunderbolt 3 does support Thunderbolt 2.


    If you want to drive a Thunderbolt 1/2 display, you have to use a Thunderbolt 3 to Thunderbolt 1/2 dongle, anything else won't work.

    If you want to drive a (mini) Display Port display, you have to use a USB-C to (mini) Display Port dongle, anything else won't work.

    So we are having 2 dongles looking the exact same, you could even plug in the other cables, but it won't work.
     
  15. Guy Mancuso macrumors 6502a

    Joined:
    Mar 28, 2009
    #15
    I have run into this issue on my 2013 MBP and trying to connect my Wide Gamut NEC 27 inch directly into the TB port on the laptop. Its a no go but in my office I run the display port cable into a Pegasus R4 TB external drive than go from there to the computer and no problems at all. What Im really hoping here is the TB3 cable to TB 2 cable will work with the same setup. NEC into Pegasus and out on TB 2 and with the connector it should work. Fingers crossed, Im waiting on new 2016 now. If anyone thinks this will not work Ill buy the LG in a heartbeat and sell this NEC
     
  16. Brookzy macrumors 601

    Brookzy

    Joined:
    May 30, 2010
    Location:
    UK
    #16
    It's not ideal, but it's damned if you do, damned if you don't.

    The alternative would be to change the connector of TB3 so it is different to USB-C. Would make it more clear to the consumer which is which but ruins backwards compatibility (at least without yet another adapter).

    As it is, it isn't too different to the transition to USB 3 - same physical connector etc.

    Personally I just wish there was one international body that was responsible for testing and verifying all USB-C and TB3 products. What's more concerning for the customer than compatibility right now is how easily you can buy dangerous and non-functioning USB-C cables.

    Even the safe ones are too complicated - is it 3A or 5A? Gen 1 or Gen 2? If it's a TB3, does it have USB backwards-compatibility? Such a mess.
     
  17. Alfredo's macrumors newbie

    Joined:
    Nov 19, 2016
    #17
    So basically, 2016 MacBook Pro with...

    27" Apple LED Cinema Display with miniDP + TB3 to TB2 adapter = doesn't work

    Any display with mini display port + TB3 to TB2 adapter = doesn't work

    27" Thunderboldt Display + TB3 to TB2 adapter = works

    U need a USB-C to mini Display port adapter to work with any mini display port display
     
  18. Guy Mancuso macrumors 6502a

    Joined:
    Mar 28, 2009
    #18
    Any links for that dongle I need one for a job that I'm renting TB display
     
  19. anson42 macrumors regular

    Joined:
    Mar 13, 2014
    Location:
    Oakland, CA
    #19
    I can verify that the Apple TB3 to TB2 adapter works with the Apple Thunderbolt Display – I'm typing in a browser window on that display right now with my new 15". As for the ports on the back of the TB display, I've successfully tested the USB and FW ports though my original Drobo connected via FW isn't recognized unless I plug it into the back of a NewerTech/OWC dual drive box that is connected to the display's FW port.
     
  20. Guy Mancuso macrumors 6502a

    Joined:
    Mar 28, 2009
    #20

    Great thanks I'll be on the road and renting the Thunderbolt Display and I only need the display to function. I have to have one for home anyway so I'll make sure I pack it . Adapter heaven. Lol

    I think a lot of folks are bugged by these adapters and reality is for a lot of us it's kind of normal anyway. I have every port plugged up now and hubs to boot.
     
  21. anson42 macrumors regular

    Joined:
    Mar 13, 2014
    Location:
    Oakland, CA
    #21
    In case anyone else has an original Drobo like do, what's annoying is that I can get my Drobo to work over firewire like this:

    MBP mid-2012 --> TB Display --> Drobo

    but NOT like this:

    MBP 2016 --> TB3 to TB2 adapter --> TB Display --> Drobo

    unless there's another FW device I can chain the Drobo to like this:

    MBP 2016 --> TB3 to TB2 adapter --> TB Display --> Other FW Device --> Drobo

    However I have to keep "Other FW Device" on for the daisy chained Drobo to be recognized. I guess I'll switch to USB for the Drobo now. I was hoping the TB3 to TB2 adapter would at just keep my status quo. No biggie, just an annoyance.
     
  22. terraphantm macrumors 68040

    Joined:
    Jun 27, 2009
    Location:
    Pennsylvania
    #22
    Do the adapters work in the other direction? That is to allow the use of a thunderbolt 3 device with a thunder bolt 2 computer? Kinda want to try one of those Razer Core eGPU things when I'm booting to Windows, but have no desire otherwise for a new macbook pro.
     
  23. BeatCrazy macrumors 65816

    Joined:
    Jul 20, 2011
    #23
    I assume I can us the Apple adapter to go from TB3 computer to TB1/2 hub? No display hanging off the hub, just HDDs etc.
     
  24. Clint_Barton macrumors 6502

    Joined:
    Oct 23, 2016
    #24
    as far as i am aware the apple adapter should work both ways
     
  25. Bryan Bowler macrumors 68040

    Joined:
    Sep 27, 2008
    #25
    Apple under Steve Jobs: It just works
    Apple under Tim Cook: Dongle-life
     

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