Asus P4SGX-MX Motherboard DIY Troubleshooting Guide - Page 31

11. System panel connector (20-pin PANEL1) This connector accommodates several system front panel functions. Power LED Speaker Connector +5VSB PLED +5V Ground Ground Speaker PANEL1 IDELED+ IDELED- Ground ExtSMI# Ground PWR Ground Reset Ground ® P4SGX-MX IDE_LED SMI Lead Reset SW ATX Power Switch* * Requires an ATX power supply. P4SGX-MX System Panel Connectors • System Power LED Lead (3-1 pin PLED) 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. • System Warning Speaker Lead (4-pin SPEAKER) This 4-pin connector connects to the case-mounted speaker and allows you to hear system beeps and warnings. • System Management Interrupt Lead (2-pin SMI) This 2-pin connector allows you to manually place the system into a suspend mode, or "green" mode, where system activity is instantly decreased to save power and to expand the life of certain system components. Attach the casemounted suspend switch to this 2-pin connector. • ATX Power Switch / Soft-Off Switch Lead (2-pin PWRBTN) This connector connects a switch that controls the system power. Pressing the power switch turns the system between ON and SLEEP, or ON and SOFT OFF, depending on the BIOS or OS settings. Pressing the power switch while in the ON mode for more than 4 seconds turns the system OFF. • Reset Switch Lead (2-pin RESET) This 2-pin connector connects to the case-mounted reset switch for rebooting the system without turning off the system power. • Hard Disk Activity Lead (2-pin IDE_LED) This connector supplies power to the hard disk activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up. ASUS P4SGX-MX motherboard user guide 1-21