ASROCK B550 Phantom Gaming 4 Manual page 35

USB 2.0 Headers
(9-pin USB_1_2)
(see p.1, No. 22)
(see p.3, No. 24)
(9-pin USB_3_4)
(see p.1, No. 21)
(see p.3, No. 23)
USB 3.2 Gen1 Header
(19-pin USB3_7_8)
(see p.1, 3, No. 10)
Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.1, No. 28)
(see p.3, No. 30)
1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must
support 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 con-
nect 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".
34
USB_PWR
P-
P+
GND
DUMMY
1
GND
P+
P-
USB_PWR
Vbus Vbus
Vbus IntA_PB_SSRX-
IntA_PB_SSRX+
IntA_PA_SSRX-
IntA_PA_SSRX+ GND
IntA_PB_SSTX-
GND
IntA_PA_SSTX-
IntA_PB_SSTX+
IntA_PA_SSTX+
GND
GND IntA_PB_D-
IntA_PA_D- IntA_PB_D+
IntA_PA_D+
Dummy
1
GND
PRESENCE#
MIC_RET
OUT_RET
1
OUT2_L
J_SENSE
OUT2_R
MIC2_R
MIC2_L
There are two headers
on this motherboard.
Each USB 2.0 header can
support two ports.
There is one header on
this motherboard. Each
USB 3.2 Gen1 header can
support two ports.
This header is for
connecting audio devices
to the front audio panel.