Chapter 1: Introduction
1-17
Slow Blinking LED for Suspend-state Indicator
When the CPU goes into a suspend state, the power LED will start blinking to
indicate that the CPU is in suspend mode. When the user presses any key,
the CPU will wake-up and the LED will automatically stop blinking and remain
on.
BIOS Support for USB Keyboard
If the USB keyboard is the only keyboard in the system, the USB keyboard will
work like a normal keyboard during system boot-up.
Real Time Clock Wake-up Alarm
The PC is perceived to be off when not in use, but is still capable of respond-
ing to preset wake-up events. In the BIOS the user can set a timer 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 on 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 circuitry on the system alive. In case the system
malfunctions and you want to turn off the power, just press down on the power
button for 4 seconds. The power will turn off and no power is provided to the
motherboard.
External Modem Ring-on
Wake-up events can be triggered by a device such as the external modem
ringing when the system is in SoftOff state.
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