last time i had to deal with the i motion 2, i ordered a replacement and it came without the plugs like you indicated. turns out there are 2 different i motion boards 1 for discreet inputs, and one for serial communications they look almost identical, i did not notice until i had it in place and could not find a place for 485 and load weigher connectors.. that was a couple years back. might want to double check with parts people