Chapter 1: Introduction
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 Button Instant-Off feature under the Advanced Chipset Section in the BIOS Setup.
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, updates 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.
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 X6QT8/X6QTE+ can only accommodate ATX 24-pin and 8-pin power supplies. Although most power supplies generally meet the specifi cations required by the CPU, some are inadequate. Your power supply must have one 24-pin and two 12V 8-pin connectors and should supply at least 650W of power; an even higher wattage power supply is recommended for high-load confi gurations. Also, your power must supply 1.5A for the Ethernet ports.
*Note: Two additional 12V 8-pin power connectors (JPW2/JPW3) are required for Intel Xeon MP CPUs. Failure to provide this extra power to the CPU may make it unstable within a few minutes of operation. See Section 2-6 for details on power connectors.