Zida Technologies Ltd. MB-A845 用户手册
Glossary
Mainboard User's Manual
Page 43
4-pin ATX Power Supply
Pin
Signal Name
1
Ground
2
Ground
3
+12V
4
+12V
About the Soft Touch Power Button
In an ATX based system, the new soft touch power button
replaces the main power switch that turns your system on and
off. From an OFF state, you can switch the system ON by
simply pressing the power button. From an ON state, the system
can be turned OFF by pressing and holding the power button
for four (4) seconds OR shut down instantly. The functions of
the power button can also be altered in the Power Management
section in the BIOS setup.
C
Universal Serial Bus (USB) / Lan (Optional)
Connector
The Mainboard provides Two 4-pin Universal Serial Bus
(USB) connectors. USB is a new interface standard for adding
external Plug-and-Play (PnP) devices to the computer system.
Peripherals that support USB PnP capabilities can operate at up
to a 12Mb/sec data transfer rate. Eventually, all external devices
connected to your computer will be standardized to USB.