Mainboard User's Manual
Page 41
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 sim-
ply 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. The functions of the power button can also be
be altered in the Power Management section of the CMOS
setup.
C
Universal Serial Bus (USB) Connector
The Mainboard provides two 4-pin Universal Serial Bus (USB)
connector's. USB is a new interface standard for adding exter-
nal 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.
E
Infra-Red (IR) Connector
The Mainboard provides a 5-pin header interface, connection to
a Hewlett Packard HSDSL-1000 compatible infrared (IrDA)
transmitter/receiver. Connect to the front panel I/O IrDA con-
nector provided with your system. Once the module is connect-
ed to the front panel I/O IrDA connector, Serial port 2 can be re-
directed to the IrDA module. When configured for IrDA, the user
can transfer files to or from portable devices such as laptops,
PDA’s and printers using application software such as LapLink.
The IrDA specification provides for data transfers at 115 kbps
from a distance of 1-meter. Support for Consumer infrared
(ASK-IR) is also included. Please refer to your IR equipment for
more detailed information.
The header pin-out is as follows:
Pin . . . . . . . . . . . . .Signal Name
1 . . . . . . . . . . . . . .VCC, power source
2 . . . . . . . . . . . . . .No Connection
3 . . . . . . . . . . . . . .IRRX, infra-red receive
4 . . . . . . . . . . . . . .No Connection
5 . . . . . . . . . . . . . .IRTX, infra-red transmit
A
P S/2 Keyboard and Mouse Connector's
The Mainboard provides two on-board PS/2 connector's, one
for the keyboard, and an other for the mouse. PS/2 devices all
have a standard 6-pin round shape connector. If you are already
using a PS/2 mouse or keyboard, simply plug them into the cor-
responding connector's. No jumper settings are necessary.
B
ATX Power Supply Connector
The Mainboard provides a single 20-pin ATX power supply con-
nector, J3 which incorporates standard (5V and 12V), with
optional 3.3V and soft-on/off signals. 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
command in the Windows 95 Start Menu. The BIOS system will
turn the system power off when it receives the proper APM com-
mand from the OS. APM must be enabled in the BIOS and OS
systems in order for the soft-off feature is to work properly.
Pin
Signal Name
Pin
Signal Name
1
+3.3V
11
+3.3V
2
+3.3V
12
-12V
3
Ground
13
Ground
4
+5V
14
PW_ON
5
Ground
15
Ground
6
+5V
16
Ground
7
Ground
17
Ground
8
PWRGOOD
18
-5V
9
+5VSB
19
+5V
10
+12V
20
+5V
glossary
Page 40
Mainboard User's Manual
