PCI Express compatibility

hedfones

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Feb 15, 2009
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This is probably a dumb question but after finally finding the search feature, I couldn't turn up anything that answered my question.

I am about to purchase a PCIE 2.1 card with a motherboard that has a PCIE 2.0 slot. Are the PCI Express versions backward compatible?
 

hedfones

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Thank you very much.
 

iam2thecrowe

Glorious
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Wrong, the issue is with certain 2.1 cards in old motherboards (usually pcie 1.x) because the BIOS may not support it. The slots are all backward compatable.
 

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