PCI express x16 2 1 on Asrock 939 Dual-VSTA

[zumpao]

Hello,could I install a PCI Express x16 2.1 on Asrock 939 Dual-VSTA motherboard?

 

[Maziar]

Hello and welcome to the forums
Yes PCI-E 2.0(and 2.1) are backward compatible with PCI-E 1.0,so you can do it.