Which can i conect the LED on the motherboar

As soon as power is switched on, mains via the UPS, the LED glows indicating that the MB is ready for action, plus an indication that the SMPS, internal power supply, responsible for converting the AC to DC(12V, 5 V & 3.3 V, both(+ve & -ve), IS working for the MB(3.3V supply to the MB) & the MB has successfully passed POST(only MB), ready for action.
I hope this is your query, else clarify the problem you are facing by posting it as a comment and I'll modify(try) the soln...........sodeep