Intel AN430TX - Motherboard - ATX Technical Product Specification page 32

AN430TX Motherboard Technical Product Specification
Closing the sleep/resume switch generates a system management interrupt (SMI) to the processor,
which immediately goes into system management mode (SMM). While the computer is in sleep
mode it is fully capable of responding to and servicing external interrupts (such as an incoming
fax) even though the monitor turns on only if a keyboard or mouse interrupt occurs. To reactivate
the computer, or resume, you must press the sleep/resume button again, or use the keyboard or
mouse.
1.11.2.2 Infrared connector
Serial Port 2 can be configured to support an IrDA module connected to this 6-pin header. After
configuring the IrDA interface, you can transfer files to or from portable devices such as laptops,
PDAs, and printers using application software.
1.11.2.3 Hard Drive (HD) LED
You can connect this header to an LED to provide a visual indicator that data is being read from or
written to an IDE hard drive. For the LED to function properly, the IDE drive must be connected
to the onboard IDE controller on the motherboard.
1.11.2.4 Sleep/Power LED
You can connect this header to an LED that will light when the computer is powered on. This
LED will also blink when the computer is in a power-managed state.
1.11.2.5 Reset
You can connect this header to a momentary SPST type switch that is normally open. When the
switch is closed, the board resets and runs the POST.
1.11.2.6 Speaker
A speaker may be installed on the motherboard as a manufacturing option. The speaker option
includes a jumper on pins 26-27 of the front panel connector. You can disable the onboard speaker
by removing the jumper, and you can connect an offboard speaker in its place. The speaker
(onboard or offboard) provides error beep code information during the Power-On Self Test (POST)
in the event that the computer cannot use the video interface. The speaker is not connected to the
audio subsystem, and does not receive output from the audio subsystem.
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