Is pci-e 2 1 compatable with pci-e 2 0

[josephmahlman]

i got a biostar (TA790GX A3+ Ver. 5.x) t-force bord it has 2 psi-e 2.0 with crossfire. can i use a card with a 2.1 interface?

 

[rolli59]

It is compatible the only issues reported have been with older PCIe 1.x motherboards.