Will My PCI or PCIe Card Work in a PCI-X Slot?

Updated Apr 19, 2024

Reported In


  • PCI-6110
  • PCI-6713
  • PCIe-6259

Issue Details

I have an older computer with a PCI-X slot, will it fit my PCI or PCIe card?


The PCI-X (PCI eXtended) standard was developed between the PCI and PCIe standards. PCI cards may be compatible, depending on the keying found in the cards. If the card shows the keying of the Universal PCI standard, it should be compatible.

No PCIe cards will be compatible with this type of slot, as the connectors are totally different.