Asus P4B-LX Motherboard DIY Troubleshooting Guide - Page 42
System Panel Connectors - driver
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8. System panel connectors (20-pin PANEL) This connector accommodates several system front panel functions. KEYLOCK SUSLED EXTSMI IDELED2 Speaker Connector MSG_LED+ MSG_LEDKEY_LOCK KEY_LOCK_G SMI SMI_G +5V NC GND SPKR PWR_BTN PWR_BTN_G IDELEDIDELED+ PWR_LED+ PWR_LEDPWR_LED2- RESET RESET_G P4B-LX P4B-LX System Panel Connectors PWRBTN IDELED RESETCON PWRLED * Requires an ATX power supply. Figure 2-28 System Panel Connectors • System Power LED Lead (3-1 pin PWRLED) This 3-1 pin connector connects to the system power LED. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode. • Keyboard Lock Lead (2-pin KEYLOCK) This lead connects to a chassis-mounted switch to allow the use of the keyboard lock feature. • System Warning Speaker Lead (2-pin SPKR) This 4-pin connector connects to the case-mounted speaker and allows you to hear system beeps and warnings. • System Message LED Lead (2-pin SUSLED) This 2-pin connector is for the system message LED that indicates receipt of messages from a fax/modem. The normal status for this LED is ON, when there is no incoming data signal. The LED blinks when data is received. The system message LED feature requires an ACPI OS and driver support. 2-22 Chapter 2: Hardware information