Mainboard User's Manual
Page 14
ATX Power Supply Connector (20-pin ATXPWR)
The single 20-pin connector (B in diagram) incorporates
st/-5V and +/-12V, with a standby 5V. With a power
supply that supports remote power on/off, the mainboard
can turn off the system power through the software control,
such as the shutdown in Windows 95 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.
Attaching the power supply ribbon cable
IMPORTANT:
Ribbon cables should always be connected
with the red stripe on the Pin 1 side of the connector.
The four corners of the connector's are labeled on the
motherboard.
ATX Power Connector
Attaching ATX Power Connector.