Asus P5A-B P5A-B User Manual - Page 31

III. INSTALLATION 13. Message LED Lead (MSG.LED, 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. 14. ATX Power Switch/Soft Power Switch Lead (PWR.SW., 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. 15. 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. 16. System Power LED Lead (PWR.LED, 3 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. 17. Keyboard Lock Switch Lead (KEYLOCK, 2 pins) This 2-pin connector connects to the case-mounted key switch to allow keyboard locking. 18. Speaker Connector (SPEAKER, 4 pins) This 4-pin connector connects to the case-mounted speaker. R Message +5V LED GND ATX Power Switch GND Reset SW GND +5V System NC GND Power LED LOCK GND Keyboard Lock +5V GND Speaker GND Connector SPKR *Requires an ATX power supply, optional ATX to AT power connector adapter, and a momentary switch button. P5A-B System Panel Connectors III. INST ALLATION Connectors ASUS P5A-B User's Manual 31