I dont know what you mean, but i guess it's one of the two
I mean power good:
(taken from some site that sells the delay circuit)
guess that'll do
Power Good (PG) Delay and Off Delay
Power Good (PG) Delay and Off Delay: It takes a power supply at least 100ms to completely power up before it can offer the proper DC voltages to the computer. The computer will not attempt to turn on until the power supply is finished powering up and sends a Power Good (PG) signal to the motherboard via a PG terminal. On power up the Power Good (PG) terminal is polled for a brief period before the PC turns on to check the status of the power supply. Only after the +5V and +3.3V rails are above threshhold does the PG signal go "high." The PG signal stays on until the PC is ready to power off. The period of delay between switching on the PS and the actual application of power is the PG delay. Typical values are 100-300ms. The PG delay of the power supply should roughly match the PG delay specification of the motherboard or power on problems may occur. When shutting off the PS a delay of about 1ms is required. This is called the Off delay.
The PG signal is generated by the +5V terminal plus a 10K resister. Frequently the PG terminal is attached to a watch dog timer card. The watch dog timer card will issue and alert if the power supply goes down.
I just want to start the psu w/o mobo:
connect the green cable to any groundasd