4k UltraFine compatibility

Discussion in 'Mac Pro' started by jamesjingyi, Mar 27, 2017.

  1. jamesjingyi macrumors 6502a


    Dec 20, 2011
    Hey guys,

    So I'm currently on the fence about buying a 4k UltraFine. I'm basically sold apart from the fact that I cannot find compatibility with any other devices that are not USB C at the moment. I wonder if anyone could help me check whether there is a way to connect it to a TB2 port? I currently have a trash can and a MacBook Pro 15" non-touchbar and they all have TB2 on them. I have heard you can run the 5k at 4k resolution using an adapter but haven't seen anyone actually being able to do it.

    Thanks in advance
  2. mrwibble macrumors newbie


    May 3, 2013
    Paddy's Bar
    Mini-DP to TB3(USB-C) connectors don't exist? Maybe Mini-DP to HDMI2.0 ("active" or you won't get 60Hz) and HDMI2.0 to TB3(USB-C)?
  3. Fl0r!an macrumors 6502a

    Aug 14, 2007
    You can't adapt to TB3 from a non-TB port (DP/HDMI), as you need both the data and the video portion of the stream. Using the Ultrafine 5K with an TB2 to TB3 adapter shouldn't be a problem though, except for the fact that the bandwidth isn't sufficient for full 5K.

    The Ultrafine 4K might be more difficult though, as it doesn't use Thunderbolt but USB-C carrying DisplayPort, so you'd need a DisplayPort to Type-C adapter. Problem is:
    • I have not seen such an adapter yet, they're always the other way around
    • I don't know if the Ultrafine 4K will work without the USB portion

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