I do not know what the LG monitor has, but it works; I connect via a TB2 port on my Mac Pro, through an Apple TB2/TB3 adapter, to the LG TB3 port. I have 4K at 60Hz on the LG monitor, and the USB hub on the LG works fine.If that only accepted two-lane DP 1.4 HBR2 it wouldn’t help though.