User`s manual

1-12
X7SB4/X7SBE User’s Manual
Main Switch Override Mechanism
When an ATX power supply is used, the power button can function as a system
suspend button to make the system 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 to keep the required circuitry in the system alive. In case the
system malfunctions and you want to turn off the power, just press and hold the
power button for 4 seconds. This option can be set in the Power section of the
BIOS Setup routine.
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. Note that external modem ring-on can
only be used with an ATX 2.01 (or above) compliant power supply.
Wake-On-LAN (WOL)
Wake-On-LANisdenedastheabilityofamanagementapplicationtoremotely
power up a computer that is powered off. Remote PC setup, up-dates and asset
trackingcanoccurafterhoursandonweekendssothatdailyLANtrafciskept
to a minimum and users are not interrupted. The motherboard has a 3-pin header
(WOL) to connect to the 3-pin header on a Network Interface Card (NIC) that has
WOL capability. In addition, an onboard LAN controller can also support WOL
without any connection to the WOL header. The 3-pin WOL header is to be used
with a LAN add-on card only.
Note: Wake-On-LAN requires 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 processors that have high CPU
clock rates.
The X7SB4/X7SBE can only accommodate 24-pin ATX power supplies. Although
mostpowersuppliesgenerallymeetthespecicationsrequiredbytheCPU,some
are inadequate. In addition, the 12V 8-pin power connection is also required to
ensure adequate power supply to the system. Also your power supply must sup-
ply 1.5A for the Ethernet ports. It is strongly recommended that you use a high
qualitypowersupply that meets ATX power supply Specication 2.01orabove.
It must also be SSI compliant (info at http://www.ssiforum.org/). Additionally, 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.