MacBook USB Hub with mini displayports I have the new 2015 MacBook. I am trying to find a HUB (or Docking Station) can can allow me to hook up two 4K Displays while supplying power to the MacBook.

I don't care if it uses HDMI or mini Display but my searches on the Internet tend to show mini Display is the way to go for 4K display.

I was a backer for HUB+. The HUB+ has been cancelled in their latest update.

But there are other projects available like HydraDock, Pluggable and OWC USB-C

Aside from Plugable's Unfunded Kickstarter Campaign, I don't see any solution to have 2 4K displays at the same time.



From Pluggable's web site


  The Plugable Ultimate Dock utilizes two unique yet complimentary
  technologies:
  
  USB 3.1 Type-C supports a feature called “VESA Alternate Mode” which
  works with the built-in graphics processor on supported systems to
  provide video output at resolutions up to 4K. The other two display
  outputs in the Ultimate Dock are enabled by the DisplayLink DL-3900
  graphics processor, which can support two additional 1080P displays at
  60Hz.


Their Kickstarter failed so I am not sure if they will ever manufacture this item. I assumed OWC is doing the same thing or something similar to drive the displays.
USB doesn't have direct access to a GPU. Driving two 4K displays would be quite difficult, if at all possible. In all honesty, if you wanted to drive two 4K displays, the new MacBook was NOT the computer you should have purchased. It can barely handle its own display.