What is the difference between 2 0 X16 and 2 1 X 16 graphics cards

I an doing a new build using a ASUS M4A89TD PRO series mother board. The book states the expansion slot supports 2Xpci Express 2.0X16. The new video cards I am looking at are listed at PCIE 2.1X16 will this work?
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  1. The difference is 0.1 :lol:

    Just kidding - I've never heard of PCI-e 2.1 before but everything is pretty much backward compatible, so you should be able to run your card or cards with no problem.
  2. pci-e 2.1 is just a upgrade of the 2.0 pci-e
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