Can a PCI-E X2 width link be supported by X550-AT2?

Hi，all！

We're planning a product with a 10 GBE Interface.

We want to use X550-AT2 as the controller.  

The CPU in the system is a Q-Seven module.

The link between X550-AT2 and CPU is PCI-E Gen3。

In the datasheet of X550, the PCI-E width is described as x1, x4 or x8。But in our system, we can only use a x2 width。

I wonder whether the x2 width can be supported by X550-AT2? Or it can only be recognized as a x1 width?

thanks sincerely.