Asus P5-99B P5-99B User Manual - Page 37
ATX Power Switch/Soft Power Switch Lead PWR, 2 pins
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III. H/W SETUP Connectors III. HARDWARE SETUP 13. ATX Power Switch/Soft Power Switch Lead (PWR, 2 pins) The system power can be controlled by a momentary switch connected to this lead. Pushing the button once will switch the system between ON and SLEEP. 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. 14. System Management Interrupt Switch Lead (SMI, 2 pins) 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 connects 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 problems. 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). If you want to use this connector, set "Suspend Mode" under Power Management Setup of BIOS SETUP section to the preferred time after which the system must go into suspend mode when you press the switch. 15. System Power LED Lead (PLED, 2 pins) This 3-pin connector connects the system power LED, which lights when the system is powered on and blinks when it is in sleep mode. 16. Reset Switch Lead (RESET, 2 pins) 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 in order to prolong the life of the system's power supply. 17. Message LED Lead (MLED, 2 pins) This indicates whether a message has been received from a fax/modem. The LED will remain lit when there is no signal and blink when there is data transfer or messages waiting in the inbox. This function requires ACPI OS support. 18. Keyboard Lock Switch Lead (KEYLOCK, 2 pins) This 2-pin connector connects to the case-mounted key switch to allow keyboard locking. 19. Speaker Connector (SPEAKER, 4 pins) This 4-pin connector connects to the case-mounted speaker. 01 Keyboard Lock Speaker Power LED Connector +5 V PLED Keylock Ground +5V Ground Ground Speaker +5 V TB_LED ExtSMI# Ground PWR Ground Reset Ground P5-99B System Panel Connections Message LED SMI Lead Reset SW ATX Power Switch* * Requires an ATX power supply. ASUS P5-99B User's Manual 37