I used the SwitchCraft USB and HDMI ports (like the one above) on my cab.
If its a continuous cable, one option is to get a metal disk, like 1.5" in diameter or something drill a hole in the middle of it, paint or powdercoat it to match the cab, and put a rubber grommet in it.
I built a car from the ground up and did quite a few plates like that where I needed a wire passthrough that looked good. (In my case, they were polished aluminum.)