Screenshot?

I think it's too busy (and non-symmetrical with the top); I would favor a sparser layout with a single character per pin. V for Vio, S for sense, 0-7 for the port pins, and the NC pins can just be left unmarked. The goal of putting the pinout on there isn't to tell people what the pins do (they should know that already), but just to remind existing users of which pin is which among the pins they already know are on there.

Also, please make sure all the labels are perfectly aligned with the port pins (yes, this is likely to be annoying given the mixed imperial/metric grids used for those connectors, but we're anal about such things).

To differentiate the A and B ports, a single A/B to the left of each (in the same text size as the A/B on top) is sufficient, we don't need to mark every IO pin separately.

How about this:

Much better. Horizontal alignment seems a bit off, though. @whitequark, any opinions on Vio vs V for that pin? + could be another option.

I'd say V fits nicely.

Updated version using "V" instead of "Vio". I also aligned all the numbers and letters to the respective holes of the connectors.

Thanks!