looking at the manual, it says nothing about them. the manual for the profec b just mentions the option port is for future products!?!?
the option on the profec b spec 2 is used for remoter switching of the hi and low boost settings, so perhaps something along the lines of that?
not really sure about the others. obviously for some sort of communication i guess. perhaps you can link up a boost gauge to the data out or something? worth a thorough google search if your interested, but unlikely you will find the items that would plug into those ports anymore!