asrock amd x470 chip set atx motherboard x470 gaming k4 asrock rack in addition to the built-in rgb illumination, it also features onboard rgb headers and an addressable rgb header that allow motherboard to be connected to compatible led devices such as strip, cpu fans, coolers, chassis and so on. users may also synchronize rgb led devices across the polychrome rgb sync-certified accessories to create their own unique lighting effects.