Sometimes you have RGB leds on the board so you could signalize diferent statuses by using RGB led instead of just one LED (e.g. RED no connection, Yellow AP mode, Green connected in STA). Step #2 would be using any combination of the RGB components.
Sometimes you have RGB leds on the board so you could signalize diferent statuses by using RGB led instead of just one LED (e.g. RED no connection, Yellow AP mode, Green connected in STA). Step #2 would be using any combination of the RGB components.