That doesn't mean it's PCI-X (64 bit, 133Mhz). It just means it can work at 3.3v IO and VCC. I'm afraid I don't know the real answer to your question, however.I was going to say the same thing. From my understanding PCI-X is a more or less physically transparent upgrade to the PCI spec. My (rather old) dual Athlon system has 64-bit, 66MHz PCI slots that look just like PCI-X.
I believe what you're referring to is the 3.3/5V key. The annoying thing are cards that fit, but don't work in the likes of my system... 3.3v compatible, but only 33MHz. Apparently no way to know that except for it not to work in the 64-bit slots.
-Cory
************************************************************************* * Cory Papenfuss * * Electrical Engineering candidate Ph.D. graduate student * * Virginia Polytechnic Institute and State University * *************************************************************************
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