3. HARDWARE SETUP
The following HPANEL illustration is used for items 20–24:
| HPANEL | |
| | | Speaker |
| | | Connector |
Power LED | | Ground Ground | |
+5 V | PLED | +5V | SPKR |
| ExtSMI# Ground | PWR SW Ground | ResetCon | Ground |
| | | Reset SW |
A7V133-VM | | | | |
SMI Lead | ATX Power Switch* |
* Requires an ATX power supply.
A7V133-VM System Panel Connectors
20)System Warning Speaker Connector (4-pin SPEAKER)This 4-pin connector connects to the case-mounted speaker. Two sources (LINE_OUT and SPEAKER) will allow you to hear system beeps and warn- ings. Only SPEAKER will allow you to hear system beeps before the integrated audio has been properly initialized.
21)System Power LED Lead (3-1 pin PWR.LED)This 3-1 pin connector connects the system power LED, which lights when the system is powered on and blinks when it is in sleep mode.
22)Reset Switch Lead (2-pin RESET)This 2-pin connector connects to the case-mounted reset switch for rebooting your computer without having to turn off your power switch. This is a preferred method of rebooting to prolong the life of the system’s power supply.
223)ATX Power Switch Lead (2-pin PWR.SW)The system power is controlled by a momentary switch connected to this lead. Pressing the button once will switch the system between ON and SOFT OFF. 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.
24)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 is decreased to save electricity and expand the life of certain components when the system is not in use. This 2-pin connector con- nects to the case-mounted suspend switch. If you do not have a switch for the connector, you may use the “Turbo Switch.” SMI is activated when it detects a short to open moment and therefore leaving it shorted will not cause any prob- lems. This may require one or two presses depending on the position of the switch. Wake-up can be controlled by settings in the BIOS but the keyboard will always allow wake-up (the SMI lead cannot wake up the system).
