For anyone who cares, there is a document comparing PCI2.1 and PCI2.0, there looks to be quite a few differences that could cause problems - potentially on older mobos. http://www.intel.com/design/chipsets/applnots/27301101.pdf To unsubscribe: send mail to majordomo at wireless.org.au with "unsubscribe melbwireless" in the body of the message