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USB 3.2 Gen1 Header
(19-pin USB3_4_5)
(see p.1, No. 15)
Front Panel Type C USB
3.2 Gen1 Header
(20-pin F_USB_3_TC1)
(see p.1, No. 13)
Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.1, No. 33)
1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must sup-
port HDA to function correctly. Please follow the instructions in our manual and chassis
manual to install your system.
2. If you use an AC'97 audio panel, please install it to the front panel audio header by the
steps below:
A. Connect Mic_IN (MIC) to MIC2_L.
B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_RET and OUT_RET are for the HD audio panel only. You don't need to connect
them for the AC'97 audio panel.
E. To activate the front mic, go to the "FrontMic" Tab in the Realtek Control panel and
adjust "Recording Volume".
1
Dummy
IntA_PA_D+
IntA_PB_D+
IntA_PA_D-
IntA_PB_D-
GND
GND
IntA_PA_SSTX+
IntA_PB_SSTX+
IntA_PA_SSTX-
GND
IntA_PB_SSTX-
GND
IntA_PA_SSRX+
IntA_PB_SSRX+
IntA_PA_SSRX-
IntA_PB_SSRX-
bus
V
Vbus
USB Type-C Cable
GND
PRESENCE#
MIC_RET
OUT_RET
1
OUT2_L
J_SENSE
OUT2_R
MIC2_R
MIC2_L
X299 Steel Legend
There is one header on
this motherboard. This
USB 3.2 Gen1 header can
support two ports.
There is one Front
Panel Type C USB 3.2
Gen1 Header on this
motherboard. This header
is used for connecting a
USB 3.2 Gen1 module for
additional USB 3.2 Gen1
ports.
This header is for
connecting audio devices
to the front audio panel.
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