Here is a list of tested devices for your board:
Your board was made in 2011: Intel® Desktop Board DH61WW Product Specifications
So, your board is 7 years old, and only supports PCIe 2.0
Your card likely supports PCIe 3.0 and claims backward compatibility. Whether it does or not, or whether it is actually compatible or not, is a question you will have to ask the manufacturer.