When the power button is pressed, it grounds the Power Switch pin on the front panel header. The Super I/O (SIO) detects this signal drop. Knights Of Xentar Code Wheel Apr 2026
1. Introduction The desktop motherboard power sequence is a strictly timed, logical chain of events controlled by the Super I/O chip (SIO) and the Embedded Controller (EC) or Platform Controller Hub (PCH). For a computer to turn on, every step in this sequence must occur in order. If one step fails, the sequence halts, resulting in a "no power" or "no post" condition. A Perfect Woman Clea Gaultier Tiffany Tatum Anissa Kate Link | French