I just successfully installed the graphics driver on my ASROCK E350M1 -THANKS Daniel!- and now I am trying to determine if there is any need to install an audio driver. Audio is fine, I just don't know if it should be better. (I have installed the restricted codecs.)
This is the description of my audio (from ASRock):
7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec) - Premium Blu-ray audio support.
I was not able to locate any Linux drivers on the Realtek or The ASRock site.