Here's my annotated image.. (the power connector at least look like mine, so I suspect we have somewhat similiar hardware, but I have not opened mine up yet)
So it seems like there are 4 voltage regulators (one for every 2 chips), and we'd need to know what part number they are. Sometimes the VRM (voltage regulator module) chips have I2c or some other direct digital interface to tell you stuff like power, set voltage, etc.
But the biggest problem is I think there's a mystery microcontroller on the board, which is likely what is in charge of setting up the VRMs. So we have to know what it is first. The best case is if we get support from the manufacturer, but unless it's Innosilicon, who might give you info because they want to sell chips, I doubt you'll get much.
