@GreyFox7 If you look at the PLUG on the power supply and my speculated pin-out it correlates with your description. The separation space in the middle is the reason why they put 6 pin contacts on the plug ( 12 if you count both sides) instead of the 5 on the plug of the SP1 an SP2. They had to put in the space because that area inside the SP3 jack has additional contacts for he Dock Station connector, which the power supply does not utilize( at least not yet). Have I managed to add additional confusion.