TYAN S5533 User Manual page 63

3.4.1 PCH-IO Configuration
SLP_S4 Assertion Width
Select a minimum assertion width of the SLP_S4# signal.
4-5 Seconds / 1-2 Seconds / 2-3 Seconds / 3-4 Seconds
Restore AC Power Loss
Specify what state to go to when power is re-applied after a power failure (G3 state).
Power Off / Power On / Last State
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