User's Manual

Mainboard User's ManualPage 14
ATX Power Supply Connector (20-pin ATXPWR)
The 20-pin connector (B, labelled as ATX1 in Mainboard
Diagram) incorporates standard +/-5V and +/-12V, and a 5V
power standby . With a power supply that supports remote
power on/off, the mainboard can turn off the system power
through software control, such as the shutdown in Windows
98 Start Menu. The BIOS system will turn the system power
off when it receives the proper APM command from the OS.
APM must be enabled in the BIOS and OS systems in order
for the soft-off feature to work properly.
The Pentium 4 ATX Power Supply (B, labelled as ATX2
in Mainboard Diagram) also comes with a 4-pin connector
which provides two additional 12V power for the mainboard.
These two additional 12V power provide a more stable power
source for the CPU power circuitry.
ATX Power Connector
Attaching ATX Power Supply.