You have prompted me to check my mobo manual. The pictures you are showing us from the manual are not jumpers, they are connectors for your AC97 onboard sound. In other words, the motherboard has audio output as distinct from a separate plug in soundcard.
You either do or you don't have a cable to connect that set of audio pins to the audio output on the motherboard. If you do, connect them. If you don't, no audio output from the pc.