Desktop Motherboard Power Sequence Pdf Exclusive _verified_ -

Before the power button is even pressed, the motherboard must establish baseline voltages to listen for a wake signal.

: The SIO sends this 3.3V high-level signal to the PCH to notify it that standby power is stable and the system is ready to be "resumed". 2. Triggering Phase (Power Button Event) desktop motherboard power sequence pdf exclusive

: The CMOS battery provides voltage to the Southbridge/PCH to maintain the Real-Time Clock (RTC). Before the power button is even pressed, the

: When the ATX power supply is plugged in, it immediately sends +5V standby (purple wire) to the Super I/O (SIO) chip. desktop motherboard power sequence pdf exclusive