The USB connector on the Ryzen 3700X box provides a connection for peripherals and external devices.
The USB connector on the Ryzen 3700X box provides a connection for peripherals and external devices.
The USB link works only when your MB lacks a compatible RGB header. This lets you manage the LEDs via AMD's application rather than the RGB interface for your MB.
Your device features an Asus AuraSync RBG header. Avoid using the USB connection.