ASROCK Z490M Pro4 Manual page 22

Serial ATA3 Connectors
(SATA3_0:
see p.1, No. 11)
(SATA3_1:
see p.1, No. 12)
(SATA3_2:
see p.1, No. 15)
(SATA3_3:
see p.1, No. 16)
USB 2.0 Headers
(9-pin USB1_2)
(see p.1, No. 20)
(9-pin USB3_4)
(see p.1, No. 19)
USB 3.2 Gen1 Headers
(19-pin USB3_5_6)
(see p.1, No. 10)
(19-pin USB3_7_8)
(see p.1, No. 14)
Front Panel Audio Header
(9-pin HD_AUDIO1)
(see p.1, No. 29)
20
USB_PWR
P-
P+
GND
DUMMY
1
GND
P+
P-
USB_PWR
Vbus Vbus
Vbus IntA_PB_SSRX-
IntA_PA_SSRX- IntA_PB_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
These four SATA3
connectors support SATA
data cables for internal
storage devices with up to
6.0 Gb/s data transfer rate.
If M2_1 is occupied,
SATA3_3 will be disabled.
There are two USB
2.0 headers on this
motherboard.
There are two USB 3.2
Gen1 headers 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.