Mainboard User's Manual
Page 47
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's
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, JP15 for
connection to a Hewlett Packard HSDSL-1000 compatible
infrared (IrDA) transmitter/receiver. Connect JP15 to the front
panel I/O IrDA connector provided with your system. Once the
module is connected to the front panel I/O IrDA connector,
Serial port 2 can be re-directed to the IrDA module. When con-
figured 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 JP15 header pin-out is as follows:
JP15 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 the other for a 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 BI0S system will
turn the system power off when it receives the proper APM com-
mand from the OS. APM must be enabled in the BI0S 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 46
Mainboard User's Manual