wouldnt go say'n that. Yes the "dess" post are the same, as far as functioning..(reading the landyard), but the connection to the mpem, are/can be different.
Exp.....gotta 96xp with 96gsx "guts", also have a 97spx mpem and all its elect componants. The dess post from the spx is a 4-plug, where the gsx one is a 3-plug. Yeah, same color wires..etc, but dif'rent plug style.