On Wed, Aug 27, 2008 at 14:00, Perry E. Metzger <perry at piermont.com> wrote: > Cyberguys sells several models -- PCI and Mini PCI, though no PCI-X > that I've seen there. That is likely because PCI2.0 and 3.0 cards work in PCI-X slots. A PCI post-code reader *should* work in a PCI-X slot just the same as in a PCI slot.