| A lot of the PCs have specific connectors to suit the model they are intended for, the PC2 on my 750SSie has the big suare connectors allowing it to plug directly in-line with the ECU connector.
My 996 PC3 (serial connection) has a plug and socket that mates up with ons for the throttle body harness.
The 998 PC3 USB conects in-line with the injectors, so it should be possible to connect it to quite a few other models in this way
Checkout the Desmo Due Paddock on Facebook | 
skidlids
Threaded Mode