Hi all: Before i ask some guestions about power supply in MB for PCI card. I still have a question about that I usually see PCI card used 5v for power supply source. But if there are all 3.3V components in my PCI card , so i don't want add a power regulator to transfer 5v to 3.3v . So can i only use 3.3v pin in PCI card? (i saw 3.3v pin is workable in PCI spec 2.2 ) PS:I affraid of it's wrong that i don't use 5v pin and use power regulator to suppy 3.3v component power....... if anyone cah tell me,wrong or true? thanks Regards.