Asus AP2400R AP2400R 2U Server User Manual English Edition - Page 17

LED Information Hard Drive Power & Status LEDs The SCSI hard drives have individual LEDs. When a hard drive is installed, the specific LED for that hard drive is ON (steady green) under normal conditions. If there is a problem, the LED may turn to a steady amber. These LEDs are unlit when there is no hard drive is present. System Reset Button This button resets (reboots) the system in case it does not respond to normal commands. Programmable Message LED This LED is software programmable to indicate conditions such a power outage or event warnings. Fan Fail or High Temperature LED When fan speeds and temperatures are normal, this LED shows a steady green. This LED turns to steady amber when fan speeds decrease or temperatures increase past a critical threshold. Power Supply Failure LED This LED lights when there is a serious problem with the power supply. Hard Disk Activity LED This LED flickers (green) whenever there is IDE or SCSI activity. This LED is unlit when there is no disk activity. Power ON LED This LED lights up (steady green) when you apply power to the system by pressing the power button. This LED goes off when you turn off the system. System Power Button The system power button is connected to the motherboard and is used for turning the system ON or OFF. AP2400R Hardware Reference Guide 17