In theory you could make an External GPU. This would allow you to utilize a more powerful desktop graphics card for powering external monitors. This personally, is what I would want to do with the power port. For my usage I utilize 3 external monitors. There are a number of solutions out there to do this, but they all have different drawbacks, (usb to dvi, is not a native solution, and taxes the host CPU, daisy-chaining DP monitors would be expensive because I would have to buy new monitors, MST Hubs are still questionable that they work).
Currently I have a desktop now with a killer graphics card, so for me it would be nice to use that graphics card in an E-GPU solution, and eliminate the desktop PC and I would be able to go down to just my Surface Pro 3 and still get about 80% usage out of the desktop graphics card.
Unfortunately there are a number of things that would have to happen for this solution to work. We would have to know the pin outs of the power port, then you would have to create a plug that would attach to the port. Then you would have to have that plug convert to a pci-e plug for the E-GPU and then have the pins for the power go to a power adapter, because without being able to power the Surface pro 3 it would be a very limited solution. I am still holding out hope that somehow we would someday be able to create a solution, but it will take someone a lot smarter than me to figure it out. LOL!
Mike
