As many other people around the web, I also have issues with the low allowed power draw from the USB ports of 100mA.
The official solution is to use a powered USB hub, which does not back feed power as this can create issues...
I don't really like this solution, since most USB hubs are kinda large compared to the RPI itself.
I have found various solutions to this problem, ranging from modifying a small standard USB hub to become a powered hub, to fiddling with the fuses in front of the USB ports them selfs and also the 750mA fuse at the micro USB power input.
I am imagining a different solution, but since I am not an expert in electronic circuitry, I wanted to get some feedback from more competent people, I.E. I'm writing here
I am thinking about using a 5V 2A power supply, and then powering the RPI through the GPIO pins using a 750mA fuse. And here is where it gets a little dicey... I then want to somehow disconnect the two USB port from the supply voltage on the PCB and then power them directly from the power supply through two 500mA fuses...
Now my question is this, can this be achieved at all? If yes, then is there anything I should be especially aware of?
I thank you in advance