[NAS] What do the LEDs on my NAS mean?

This article explains what the various LEDs mean on a NAS for troubleshooting.

The LEDs on a NAS are on the front on the left.

Power LED – Green - Indicates that the NAS is powered on.

System LED – Green – Flashes when booting – Dim with intermittent flashing to indicate malfunction – Steady upon completion of boot process.

Network LED – Green – Indicates when a network connection has been established.

 

Note1: If the NAS's memory has been upgraded, please restore the memory to default installation to verify if it's the upgrade memory module causing the issue.

Note2: If the system LED(green) is blinking for more then 10 minutes after power on the NAS without any hard drive installed, please contact technical support for help: https://www.asus.com/support/