Datasheet
Chapter 1: Introduction
1-13
Slow Blinking LED for Suspend-State Indicator
When the CPU goes into a suspend state, the chassis power LED will start blink-
ing to indicate that the CPU is in the suspend mode. When the user presses any
key, the CPU will wake-up and the LED indicator will automatically stop blinking
and remain on.
BIOS Support for USB Keyboard
If the USB keyboard is the only keyboard in the system, it will function like a normal
keyboard during system boot-up.
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 to wake-up the whole system. During the SoftOff
state, the ATX power supply provides power the system to keep the required cir-
cuitry "alive". In case the system malfunctions and you want to turn off the power,
just press and hold the power button for 4 seconds. The power will turn off and no
power will be provided to the motherboard.
1-5 Power Supply
As with all computer products, a stable power source is necessary for proper and
reliable operation. It is even more important for processors that have high CPU
clock rates of 1 GHz and faster.
The X8SAX/C7X58 accommodates ATX12V standard power supplies.
Although most power supplies generally meet the specications required by the
CPU, some are inadequate. A 2-Amp of current supply on a 5V Standby rail is
strongly recommended.
It is strongly recommended that you use a high quality power supply that meets
ATX12V standard power supply Specication 1.1 or above. It is also required that
the 12V 8-pin power connection (JPW2) be used for adequate power supply. How-
ever, the 12V 4-pin power connection (JPW3) is optional, but may be necessary
when increased power to the installed peripheral cards is needed. In areas where
noisy power transmission is present, you may choose to install a line lter to shield
the computer from noise. It is recommended that you also install a power surge
protector to help avoid problems caused by power surges.