Hi @Byron_Ch ,
Thanks for your patience.
Yes, you are correct, but I wanted to add a few notes.
we are happy to review any schematic you make. If you want that, let us know and we can reach out to you using the email you registered with on this forum.
the VBUS on V2 can supply a total of 2A, but due to pin limits (1A per pin) if you think you'll need that full 2A sustained (it's ok for burst/in-rush), I would use the 5VDC_IN rail (output of the eFuse) instead of VBUS, but you'll still need to use VBUS as the "host detect" function.
you can start from our Altium package to get a jump start on connectors, pinouts, and pcb outline with mounting holes and connector placement here: https://docs.modalai.com/voxl2-connectors/#add-on-board-to-board-design-package
And I would still keep the J5 mate even if you don't need any signals. You can pick up the GNDs and it will provide a solid mechanical function providing two points of contact.
on your plug in board, be sure to do a 3D fit check. There are some high components on V2 and you need to pay attention to any high components on the back side (with the connector mates) of your design. V2 3D is here:
Let us know if you have any other questions. We want to see your plug in board succeed the first time!