Biostar M7VIB [23/73] Chapter 1 motherboard description

Chapter 1 Motherboard Description

1-18

RST (Reset Button)

This connector can be attached to a momentary SPST switch. This switch is usually

open, and when it is closed, it will cause the motherboard to reset and run the POST

(P ower On Self T est).

POW-LED (Power LED Connector)

This connector can be attached to an LED on the front panel of a computer case.

The LED will illuminate while the computer is powered on.

HLED (Hard Drive LED Connector)

This connector can be attached to an LED on the front panel of a computer case.

The LED will flicker durin g disk act ivity where it is on ly applied to those IDE

drives directly attached to the system board.

IR (Infrare d Connector)

This connector is used to attach to an infrared sensing device. After the IrDA

interface is configured, connectionless data transfer to and from portable devices

such as laptops making PDAs is poss ib le.

SLP (Sleep/Green Button)

This connector is used to conserve energy by powering down the monitor and the

hard disk when is not in use. To configure this option, you need to connect a button

from the front panel to this sleep button. Depressing the button will power down

the monitor and the hard drives until the system is invoked by any keyboard activity,

mouse activity, modem activity or when the sleep button is depressed again. APM

(Advanced Power Management) must be enabled in the system BIOS and the APM

driver must be loaded.

ON/OF F (Powe r B utto n)

This connector can be attached to a front panel power switch. The switch must

pulled the Power Button pin to ground for at least 50 ms to signal the power supply

to switch on or off. (The time required is due to internal debounce circuitry on the

system board). At least two seconds must pass before the power supply will

recognize another on/off signal.