Acorp 4PM266M User Manual page 19

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ATX Power Switch (PS_ON)

The system power is controlled by a momentary switch

connected to this lead. Pushing the button once will switch

the system ON.

Power LED Lead (PWRLED)

The system power LED lights when the system power is on.

Speaker Connector (SPEAK)

The speaker (onboard or offboard) provides error beep code

information during the Power Self-Test when 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.

Hard Drive LED Connector (HD_LED)

This connector supplies power to the cabinet IDE activity LED.

Read and write activity by devices connected to the Primary or

Secondary IDE connectors will cause the LED to light up.

SMI Suspend Switch Lead (EXTSMI) (Disabled)

This allows the user to manually place the system into a suspend

mode of Green mode. System activity will be instantly decreased

to save electricity and expand the life of certain components

when the system is not in use. This 2-pin connector (see the

figure) connects to the case-mounted suspend switch. If you do

not have a switch for the connector, you may use the "Turbo

Switch" instead since it does not have a function. If you want to

use this connector, the "Suspend Switch" in the Power

Management Setup of the BIOS SOFTWARE section should be

on the default setting of Enable.

Reset Switch Lead (RESET)

The connector can be connected to a momentary SPST type

switch that is normally open. When the switch is closed, the

motherboard resets and runs the POST.

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