Dell PowerEdge 850 User's Guide download pdf (Page 93)

Back-Panel Features

Figure2-2 shows the back-panel features of the system.

Figure 2-2. Back-Panel Features

NIC Indicators

Figure 2-3. NIC Indicators

System

identification

button

You can use the system identification buttons on the front and back panels to locate a particular system within a rack. When

one of these buttons is pushed, the blue system status indicators on the front and back panels blink until one of the buttons is

pushed again.

You can also use the systems management software to cause the indicators to flash to identify a particular system.

Hard-drive

indicator

The green hard-drive activity indicator flashes when the SATA hard drives are in use.



NOTE: This indicator does not flash when SCSI hard drives are in use.

NMI button

The NMI button is used to troubleshoot software and device driver errors when using certain operating systems. This button can

be pressed using the end of a paper clip. Use this button only if directed to do so by qualified support personnel or by the

operating system's documentation.

USB connectors

Connect USB 2.0-compliant devices to the system.

Video connector

Connects a monitor to the system.



Power-on

indicator,

Power button

The power button turns system power off and on.



NOTICE: If you turn off the system using the power button and the system is running an ACPI-compliant operating system, the

system can perform an orderly shutdown before power is turned off. If the power button is pressed for more than 4 seconds,

the system power will turn off regardless of the current operating system state. If the system is not running an ACPI-compliant

operating system, power is turned off immediately after the power button is pressed.

The power button is enabled in the System Setup program. When disabled, the button can only turn the system power on. For

more information, see "Using the System Setup Program" in your User's Guide.

The power-on indicator lights or blinks to indicate the status of power to the system.

The power-on indicator lights when the system is on. The indicator is off when the system is off and power is disconnected from

the system. The indicator blinks when the system is off but is connected to the power source.

Diagnostic

indicators (4)



The diagnostic indicators aid in troubleshooting the system. For more information, see "Diagnostics Indicator Codes."

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Dell PowerEdge 850 User's Guide Page 93

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