3.3v line from motherboard?

[goodl]

Where can I pick up a 3.3v from the motherboatd/PSU? (ie firewire header etc.)

 

[BigBadBiologist]

http://www.interfacebus.com/ATX_Motherboard_Main_Power_Connector_Pinout.html

 

[goodl]

Id rather not chop incto my main power connector, anywhere else?

 

[Mohonri]

If your PSU has the old AUX connector, you can tap off the orange wires there. Otherwise, you'll have to get it from the ATX connector. Don't worry about messing things up--motherboards and CPUs don't draw their power off the 3.3V line like they used to.