Dell PowerEdge 1750 - Manual (Page 21)

Front-Panel Features
Figure 2 -2 shows the controls, indicators, and connectors located behind the optional bezel on the system's front panel. Table 2 -2 provides a description of
each feature.
Figure 2-2. Front-Panel Features
Table 2-2. Front-Panel LED Indicators, Buttons,
and Connectors
Off Off Power is not available to the system, or power is available to the system, but the system is not powered
on.
Off Blinking The system has detected an error.
On Off Power is on, and the system is operational.
Blinking Off The indicator has been activated to identify the system in a rack.
NOTE: While the system is being identified, the blue indicator blinks even though an error has been detected. After the system is identified, the blue
indicator stops blinking and the amber indicator resumes blinking.
Indicator, Button,
or Connector Icon Description
Blue system status
indicator The blue system status indicator lights up during normal system operation. Both the systems management software and
the identification buttons located on the front and back of the system can cause the blue system status indicator to flash
to identify a particular system.
Amber system status
indicator The amber system status indicator flashes when the system needs attention. Check for a problem with the power
supplies, fans, system temperature, or hard drives.
NOTE: If the system is connected to AC power and an error has been detected, the amber system status indicator flashes
regardless of whether the system has been powered on.
NIC1 and NIC2 link
and activity indicators The link and activity indicators for the two integrated NICs light intermittently when the NICs are in use.
Hard-drive activity
indicator The green hard-drive activity indicator flashes when the hard drives are in use. See Figure 2 -3 for more information on
hard-drive indicators.
Power-on indicator,
power button The power-on indicator lights when the system power is on.
The power button controls the DC power supply output to the system.