Every time I see a soldering iron use a 3.5mm headphone jack for the tips, some dark dumb part of my brain wants to plug a pair of headphones into it to see what happens.
Back in the 80's a friend of mine had a system for launching model rockets built out of power cords - a extension cord with multiple outlets for distribution, and power cords with microclips on one end to hook to the rockets. And of course he had to find out "what happens if I plug this in". (If I remember right the microclips were fused together, but they may have just melted, it's been a while.)
EDIT: I take the following back. The actual cable is USB-USB. The P2 connector links directly to the heated head, what is perfectly equivalent to "labeled".
But yeah, people that design products, please if you make a non-standard use of a standard connector, label it.
I would absolutely not buy this because that USB-P2 cable will mix with every other thing that thought was a good idea to use an unlabeled USB-P2 cable that only God knows whether they are compatible or not. (Common sense would imply they are, but common sense already flew out of the window long ago when you see a cable like that.)
