I'd like to know details on what the rails for the DQ77KB support. Specifically, I'm looking at the PCIe slot. The product specs manual says that the PCIe slot supports up to 25W and that the board should draw no more that 12A. I'm looking for more details. Why doesn't the PCIe slot support the standard 75W for PEG? Or does it? What are the amperage ratings for the 12, 5, and 3.3 lines?