Chapter 1: Introduction
1-17
Slow Blinking LED for Suspend-State Indicator
When the CPU goes into a suspend state, the chassis power LED will start
blinking to indicate that the CPU is in suspend mode. The user can then
press any key on the system's keyboard to awaken the CPU, at which time
the LED will stop blinking and remain on.
USB Keyboard
If a USB keyboard is the only keyboard on the system, it can be enabled to
function like a standard feature keyboard during system boot-up.
Real Time Clock Wake-Up Alarm
Although the PC may be perceived to be off when not in use, it is still
capable of responding to preset wake-up events. In the BIOS, the user can
set a timer to awaken 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. With this feature enabled, the system will enter a
SoftOff state when the user depresses the power button. The monitor will
be suspended and the hard drive will spin down. Depressing the power
button again will cause the whole system to awaken. During the SoftOff
state, the ATX power supply provides power to keep the minimum required
circuitry in the system alive. In case the system malfunctions and you want
to turn off the power, just depress and hold the power button for four
seconds. This will turn off the system completely with no main power
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 the SoftOff state. "External Modem Ring-On"
must be an included feature on the installed modem card when this feature
is desired and the corresponding setting must be enabled in the BIOS. Note
that external modem ring-on can only be used with an ATX 2.01 (or above)
compliant power supply.
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