On Thu, 2005-07-28 at 18:26 -0500, Bryan J. Smith wrote:
Not exactly. While 20-pin ATX[1.0] and ATX12V (aka P4) as well as 24- pin ATX2.0 all share the same, base 20-pin, I'm not entirely sure EPS12V is the same as ATX2.0. I believe there is a converter or partial cable used for EPS12V to ATX [1.0|12V|2.0]. I could be wrong though. Never tried it.
Okay, here's the deal. EPS12V 2.0 and ATX 2.0 are compatible through 24-pins. EPS12V 1.x is not from what I read, but the power supplies and mainboards were rare.
I'm still searching for more technical information, especially pin-outs and expected tolerances.