I have the ASUS® PRIME B450-PLUS (DDR4, USB 3.1, 6Gb/s) - RGB Ready! motherboard and when the PC turns off, the light inside the motherboard is still flashing. Is that the RGB thing that comes along with it and is there a way to turn it off when the pc turns off and turn it on when the pc is on? Should I keep it like it is now or turn it off to save power?