ASRock A75 Pro4-M manual

To enable Multi-Streaming function, you need to connect a front panel audio cable to the front panel audio header. After restarting your computer, you will find “Mixer” tool on your system.

Please select “Mixer ToolBox” , click “Enable playback multi-streaming”, and click “ok”.

Choose “2CH”, “4CH”, “6CH”, or “8CH” and then you are allowed to select “Realtek HDA Pri- mary output” to use Rear Speaker, Central/Bass, and Front Speaker, or select “Realtek HDA Audio 2nd output” to use front panel audio.

***It is recommended to install the USB Keyboard/Mouse cable to USB 2.0 ports (USB23) instead of USB 3.0 ports.

****eSATA3 connector supports SATA Gen3 in cable 1M.

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