ASROCK B450M-HDV R4.0 User Manual page 25

5
6
Please note that this connector is the interface to the LED control board on the SR3, it requires the AMD
utility "SR3 Settings Software" to control the LED.
*The diagram shown here are for reference only. Please refer to page 27 for the orientation of USB Header.
20
USB 2.0 Header
4-pin FAN cable