mDP to HDMI 2.0 adapter limited to 30Hz. Intel HD 5500 to Samsung JU7500

Using Plugable mDP to HDMI 2.0 Adapater. Can only see option for 30Hz.
Dell Latitude 7250 with Intel HD 5500 graphics, connected to a Samsung JU7500.
Display Driver version
Built-in display turned off.
Using HDMI 2.0 cable on HDMI port 1. UHD color is enabled.
Have been using same cable and port with different PC and have not had any issues displaying 4k 60Hz 4:4:4 Chroma

Please help me get to 60Hz.

Hi Nathan, thanks for posting! We have also received a direct email support request and we will limit our communication to that email thread and I will update this forum support thread once we know more.

Thank you,

David W.
Plugable Technologies