A:Answer It only supports the monitors with a 1080 vertical resolution (I think these are 2560x1080 at 21:9) - If your ultrawide is 3440x1440 it will require DisplayPort native connection (or Thunderbolt or USB Type-C native) as that resolution has the same bandwidth requirements as a 4K screen, even though the pixels are not quite as many. Not all USB-Type C docks or thunderbolt docks support 4K output, which those WQXGA displays require. HDMI is usually limited to 1080 vertical unless the monitor, video port AND HDMI cable and any adapters support full HDMI 2.0 spec, which MANY do not yet.