Dell PowerEdge 2650 - Manual (Page 18)

System Identification Indicators
You can use identification buttons on the front and back panels to locate a particular system within a rack. When you press either of these buttons, the
identification indicator on the back and status indicator on the front bezel blink until you press one of the buttons again. If the bezel is removed, the LCD
display blinks blue.
See Figure 1 -2 to locate the front-panel system identification button. See " Back-Panel Features " to locate the back-panel system identification button and
indicator.
Front-Panel Features
Additional indicators for system power and drives are located behind the bezel. The front-panel status LCD provides information by using an alphanumeric
character display (see "
Status LCD ").
Figure 1 -2 shows the front-panel features of the system. Table 1 -3 describes the front-panel features.
Figure 1-2. Front-Panel Features
The front panel also features a USB connector, video connector, and PS/2 connector (see Figure 1 -2 ) for connecting a mouse and keyboard using a Y-cable.
Amber blinking The system has detected an error and requires attention.
Blue blinking The system is identifying itself.
NOTE: Server management software causes the indicator to blink to identify a particular system.
Table 1-3. Front-Panel Features
Component Description
Power button Turns system power off and on.
l If you turn off the system using the power button and the system is running an ACPI-compliant operating system (such as
Microsoft® Windows® 2000), the system can perform an orderly shutdown before power is turned off.
l If the system is not running an ACPI-compliant operating system, power is turned off immediately after the power button is
pressed.
The button is enabled in the System Setup program. When disabled, the button can only turn system power on.
Power indicators Provides information on power status (see " NIC Indicators ").
CD and diskette drive
indicators Indicate read or write access to the respective drive.
hard drive indicators Provide information on the status of the respective hard drive (see " SCSI Hard-Drive Indicators ").
NIC indicators Indicate whether the NIC has a valid link to the network (see " NIC Indicator Codes ").
Status LCD Signifies when the system is operating correctly or when the system needs attention (see " Status LCD ").
System identification
button Used to identify a particular system (see " System Identification Indicators ").
NMI button Can be used to troubleshoot software and device driver errors when using certain operating systems. This button is often referred
to as a "force dump switch" and can be pressed using the end of a paper clip.
When the option is enabled in the System Setup program and the button is pressed, an NMI alerts the system. Use this button only
if directed to do so by qualified support personnel or by the operating system's documentation.