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how to debug a PCI resource conflict

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I have recently replaced the ADLINK PCI-7432 with the NI PCI-6515, these are 2 very similar Digital IO cards.  I was forced to ditch the Adlink card because it's not supported for the more recent versions of LabVIEW.

The NI PCI-6515 works as expected, however, when I make the swap, the card in the next PCI slot, the MOXA 8-port serial card CP-118U disappears from Device Manager.

If I move the MOXA card to an alternative slot, it reappears in Device Manager, but this is not a solution because the cables don't reach to the other end of the large PCI back plane.

I believe this is a PCI resource conflict, how to I debug/fix to make the MOXA card continue working in it's original slot position?


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