Wouldn't work with ASUS Z97-A motherboard and Win 10 Pro (creator version). Tech support told me the Xonar DGX would work and it's onlyabout $10 more.

Worked fine immediately after installation (with minor complaint: every time we restarted our computer we had to reconfigure device to output sound to the connected 2-channel speakers, rather than the default: 2-channel front-panel headphones, which were NOT connected).