Asus RS163-E4 RX4 User Guide - Page 74

6. System panel connector (20-pin PANEL1) This connector supports several chassis-mounted functions. PANEL POWERLED+ NC POWERLEDMLED+ MLEDNC +V GND GND SPKROUT ® KFN-DR/SAS PIN HDLED+ HDLEDNMIBTN# GND POWERBTN# GND NC RESETBTN# GND KFN-DR/SAS System panel connector The system panel connector is color-coded for easy connection. Refer to the connector description below for details. • System power LED (Green 3-pin PLED) This 3-pin connector is for the system power LED. Connect the chassis power LED cable to this connector. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode. • Hard disk drive activity (Red 2-pin IDE_LED) This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable to this connector. The IDE LED lights up or flashes when data is read from or written to the HDD. If an optional SCSI or SATA add-in card is installed, the read or write activities of any device connected to the SCSI or SATA add-in card causes this LED to light up. • System warning speaker (Orange 4-pin SPEAKER) This 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings. • Power/Soft-off button (Yellow 2-pin PWRSW) This connector is for the system power button. Pressing the power button turns the system ON or puts the system in SLEEP or SOFT-OFF mode depending on the BIOS settings. Pressing the power switch for more than four seconds while the system is ON turns the system OFF. • Reset button (Blue 2-pin RESET) This 2-pin connector is for the chassis-mounted reset button for system reboot without turning off the system power. 4-12 Chapter 4: Motherboard information