I like my room dark when I sleep. So when I build my new ASUS Maximus VII Hero computer and powered off for the first time and noticed all these lights still on! the very next thing I did was google how to turn them OFF! It took me weeks to figure out what to do and I have not seen (using Google) any one posting the complete answer. So I'll try to explain.
The ROG and SupremeFX and mobo On button LEDs can be turned off in the BIOS using the Advanced>ROG Effects options. The problem for people is if you disable them the LEDs are off ALWAYS. People would like to have them off while powered down but on while powered on.
I left them disabled, as this was the only fix I could find and I did not want them on while powered down. The problem I still had was that my bright green LED on my ASUS GTX760 was still on! even when powered off and all the mobo lights were off. Also my WD MyBook would stay on in sleep mode and slowly blink the LED since there is no actual power off button on the MyBook like my External enclosure and Lacie HHD has.
SO THE FIX!!!!!
In the BIOS under ADVANCED>APM there is a ErP/EuP setting.
ErP Support determines whether to let the system consume less than 1W of power in S5 (shutdown) state. When the setting is enabled, the following four functions will become unavailable: PME Event Wake Up, Power On By Mouse, Power On By Keyboard, and Wake On LAN.
redduc900 @overclockers.comThis is the answer. When I enabled ErP S5 and powered off ALL LEDs were off. Motherboard, GPU, External HHD were all OFF!
So I re-enabled ROG Effects on the motherboard then powered off again. ALL LEDs were still OFF!
So this ErP enabled S5 will allow you to keep your fancy ROG lights on when the computer is on as well as turn OFF everything so you can get a good nights sleep.