ASROCK PRO Series User Manual page 41

USB 2.0 Headers
(9-pin USB_3_4) (see p.6, No. 16)
(9-pin USB_5_6) (see p.6, No. 17)
There are two headers on this motherboard. Each USB 2.0 header can support
two ports.
USB 3.2 Gen1 Header
(19-pin USB3_5_6) (see p.6, No. 8)
There is one header on this motherboard. This USB 3.2 Gen1 header can support two
ports.
38
USB_5_6
USB_PWR
-B
+B
GND
DUMMY
1
GND
+A
-A
USB_PWR
USB_3_4
USB_PWR
-B
+B
GND
DUMMY
1
GND
+A
-A
USB_PWR
USB3_5_6
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