Advantech DNS-3200 - Manual (Page 25)

7 Chapter 1
1.2 Panel Indicators
PWR: The power indicator turns green permanently
when pressing Power On/Off or when starting the unit.
HDD Active: Each and every hard disk comes with an
independent HDD Active indicator. When the hard disk is
being read or written to, the indicator turns green and
flashes.
Network State: This is the indicator that shows and state
of the network connection. When the port is communicat-
ing or transmitting, the indicator turns green and flashes.
Temperature Alarm: When the system develops abnor-
mal temperatures, the LED indicator turns red.
Power Fail Alarm: When the system develops an abnor-
mal power supply, the LED indicator turns red and the
system emits an alarm. Press the beep silencer to turn
the alarm off.