.3

H/WConnectors

SETUP

3. HARDWARE SETUP

For items 16-23

 

Keyboard Lock

 

SMILead

 

MessageLED

 

 

 

Speaker

 

 

 

 

Connector

 

MSGLED+ MSGLED-

 

 

 

 

Keylock

Ground

ExtSMI# Ground +5V

Ground Speaker

®

PWRBTN Ground

IDELED-

IDELED+

PWRLED+ PWRLED-

PWRLEDB- Reset Ground

P3B-1394

ATX Power

 

 

 

Reset SW

Switch*

 

 

 

 

 

 

 

 

 

IDELED

 

 

Power LED

 

* Requires an ATX power supply.

P3B-1394 System Panel Connections16)System Message LED Lead (2-pin MLED)

The LED connected to this lead indicates the state of the system. The LED lights when the system is in suspend mode and is OFF otherwise.

17)Keyboard Lock Switch Lead (2-pin KEYLOCK)

This 2-pin connector connects to the case-mounted key switch to allow keyboard locking. NOTE: When the keyboard is locked, the mouse can still be used.

18)System Management Interrupt Lead (2-pin SMI)

This allows the user to manually place the system into a suspend mode or “Green” mode where 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 preceding figure) connects to the case-mounted suspend switch. If you do not have a switch for the connector, you may use the “Turbo Switch” since it does not have a function. SMI is activated when it detects a short to open moment and therefore leaving it shorted will not cause any problems. This may require one or two pushes depending on the position of the switch.

19)System Warning Speaker Connector (4-pin SPEAKER) This 4-pin connector connects to the case-mounted speaker.

20)ATX Power Switch / Soft-Off Switch Lead (2-pin PWR)

The system power is controlled by a momentary switch connected to this lead. Pushing the button once will switch the system between ON and SLEEP or ON and SOFT OFF, depending on your BIOS or OS setting. Pushing the switch while in the ON mode for more than 4 seconds will turn the system off. The system power LED shows the status of the system’s power.

36

ASUS P3B-1394 User’s Manual