User`s manual

Chapter 1: Introduction
1-17
Real Time Clock Wake-Up Alarm
The PC may appear to be off when not in use, but it is still capable of
responding to preset wake-up events. The user can set a timer in the BIOS
to wake-up the system at a predetermined time.
Main Switch Override Mechanism
When an ATX power supply is used, the power button can function as a
system suspend button. When the user presses the power button, the
system will enter a SoftOff state. The monitor will be suspended and the
hard drive will spin down. Pressing the power button again will cause the
whole system to wake-up. During the SoftOff state, the ATX power supply
provides power to keep the required system circuitry alive. In case the
system malfunctions and you want to turn off the power, just depress the
power button for 4 seconds. The system will turn off and no power will be
provided to the motherboard.
External Modem Ring-On
An external modem ringing can be used to trigger a wake-up when the
system is in the SoftOff state .
Wake-On-LAN (WOL)
Wake-on-LAN is defined as the ability of a management application to re-
motely power up a computer that has been powered off. Remote PC setup,
updates and asset tracking can occur after hours and on weekends so that
daily LAN traffic is kept to a minimum and users are not interrupted.
The motherboards have a 3-pin header (WOL) used to connect to the 3-pin
header on a Network Interface Card (NIC) that has WOL capability. Note
that Wake-on-Lan can only be used with an ATX 2.01 (or above) compliant
power supply.
1-6 Power Supply
As with all computer products, a stable power source is necessary for
proper and reliable operation. It is even more important for Pentium II/III
CPUs that have high clock rates.