This 6ft (~2m) mDP to HDMI Cable is used to connect an HDMI Monitor to NUCs using the mDP connector or adapter.
This connects directly to the NUC5i3RYK/H, NUC5i5RYK/H, NUC5i7RYH, NUC5i3MYHE,...
This 6ft (~2m) DP to DP Cable is used to connect a DP Monitor to NUCs using a DP adapter or MST Hub.
The most common use would be with an MST Hub that provides DP outputs.
The connector pins are...