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Yes pci express 3 cards are backwards compatible to pci exp 2.
Sorry, there was a problem. Please try again later.Yes, it will work. PCI express 3.0 is backwards compatible with 2.0. You may see very slightly lower performance with a 2.0 slot instead of 3.0 but you probably won't be able to tell the difference.
Sorry, there was a problem. Please try again later.As far as i know the pci express slots are backwards compatible. So you can put a 3.0 card into a 2.0 slot, but not the other way around. That being said it just may not get the optimal speeds because of that
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