Hi @Jan-Hartmann ,
If you review our MH carrier block diagram here: https://docs.modalai.com/microhard-add-on-datasheet/#block-diagram
You'll notice we unfortunately do not expose the other Microhard Ethernet port. I'm not optimistic there is even a way to get it with blue-wires. Sorry about that.
For S.BUS support, we offer a small standalone product noted here: https://docs.modalai.com/voxl2-io/
We think that is a great little gadget that expands your PWM and I/O options and is meant for Voxl2.
Let us know if you have any other questions!