when i got my s300 it came with the hondata board itself, the smanager, the data cable, and the components, some stickers and some directions. NOW when i look at pic of "hondata s300" from other sights selling them i see all that i istalled, BUT it looks like there is another circuit board that is tipped upside down above and and on the same side of the ecu as the hondata board. what is this? also, i look at the hondata board and see two different pin locations on the top of the board (the side that says hondata serial number xxxxxx) and they consist of 4-5 pin in each location, what goes here or what are they for. thanks, id put up a pic to make this all easier but am not sure how yet

 

THat other board is a knock board from a P72, p61 or P30....you obviously dont' have one of these ecus, dont' worry about it.

Dont' worry about the pins on the s300 itself. as long as it uploads, datalogs and runs your car then everything is installed correctly.