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Can you use a PCI Express card in a PCI card slot?

How to understand PC slot compatibility

QUESTION I have a Dell Dimension M2400 PC running Windows XP SP3. Can I use a TP-Link TL-WN781ND PCI Express card in its PCI slots? Jim Melvin

No, you can't. PCI Express cards are not interchangeable with PCI cards. However, TP-Link – like many other manufacturers – makes a selection of PCI cards you could use as an alternative.

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