Power Supply - Supermicro X6DVA-4G2 User Manual

X6DVA-4G2/X6DVA-EG2 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
will cause the whole system to wake-up. 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 (WOR)
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 defi 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 traffi 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.
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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 X6DVA-4G2/X6DVA-EG2 can only accommodate ATX 24-pin power supplies.
Although most power supplies generally meet the specifi cations required by the
CPU, some are inadequate. You should use one that will supply at least 400W of
power and includes the additional +12V, 8-pin power connector. An even higher
wattage power supply is recommended for high-load confi gurations. Also your
power supply must supply 1.5A for the Ethernet ports.
Note: An additional 12V 8-pin power connector (PW2) is required to support the
Intel Xeon CPUs. Failure to provide this extra power to the CPU will cause the
system to become unstable even after a few minutes of operation. See Section
2-5 for details on connecting the power supply.
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