ASROCK X299 User Manual page 18

** If you use a 2-channel speaker, please connect the speaker's plug into "Front Speaker Jack". See the table below
for connection details in accordance with the type of speaker you use.
Audio Output
Channels
2
4
6
8
To enable Multi-Streaming, you need to connect a front panel audio cable to the front
panel audio header. After restarting your computer, you will find the "Mixer" tool on your
system. Please select "Mixer ToolBox"
click "ok". Choose "2CH", "4CH", "6CH", or "8CH" and then you are allowed to select
"Realtek HDA Primary output" to use the Rear Speaker, Central/Bass, and Front Speaker,
or select "Realtek HDA Audio 2nd output" to use the front panel audio.
*** ACPI wake-up function is not supported on USB3_34 ports.
12
Front Speaker Rear Speaker
(No. 7) (No. 5)
V
V
V
V
Central / Bass
(No. 4)
-- --
V --
V V
V V
, click "Enable playback multi-streaming", and
Line In
(No. 6)
--
--
--
V