ASROCK WRX90 WS EVO User Manual page 45

USB 2.0 Headers
Vertical:
(9-pin USB_12) (see p.6, No. 42)
Right Angle:
(9-pin USB_34) (see p.6, No. 41)
There are two headers on this motherboard. Each USB 2.0 header can support two
ports.
USB_12
USB_PWR
P-
P+
GND
DUMMY
1
GND
P+
P-
USB_PWR
WRX90 WS EVO
USB_34
USB_PWR
P-
P+
GND
1
DUMMY
GND
P+
P-
USB_PWR
41