Adapter to plug modern Thunderbolt 3 peripherals into Thunderbolt 2 ports?

Discussion in 'iMac' started by zorinlynx, Feb 21, 2018.

  1. zorinlynx macrumors 603


    May 31, 2007
    Florida, USA
    I'm seeing a lot of Thunderbolt 3 peripherals hitting the market; the ones that use the USB-type C connector and can plug into newer Macs. I'm also seeing adapters that let you plug older Thunderbolt 2 peripherals (using the displayport connector) into newer Macs that have the type-C connector.

    I can't find an adapter to do the opposite, though; I want to plug Thunderbolt 3 peripherals into my 2015 iMac that has TB2 ports.

    For instance, this drive:

    Does this adapter exist, or am I SOL? It's a bit depressing because this iMac is not that old and should be able to support this newer hardware.
  2. BillyBurke macrumors newbie

    Sep 25, 2014
    --- Post Merged, Feb 21, 2018 ---
    Me too. Lots of stuff going the other way, 2 to 3, but nothing 3 to 2. Perhaps because you can't throttle "high capacity into small" but can insert "small into high" ?
  3. curmudgeonette macrumors 6502

    Jan 28, 2016
    I believe the Apple TB3 to TB2 adapter is bidirectional.

    (You might be able to find a lightly used one for cheap because many people bought them erroneously thinking it was a DisplayPort adapter.)
  4. steffi macrumors 6502a

    Jun 7, 2003
    Mac with Thunderbolt 2 port -> Thunderbolt 2 cable -> Apple Thunderbolt 2-Thunderbolt 3 Adapter -> Thunderbolt 3 Device
  5. Fishrrman macrumors P6


    Feb 20, 2009
    Apple's tbolt2-to-tbolt3 adapter is supposed to "work both ways".
    Whether it actually DOES, probably depends on the hardware with which it's being used....

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