setup (see System Setup).

10

power button

Press to turn on the computer.

 

 

NOTICE: To avoid losing data, do not use the power button to

 

 

turn off the computer. Instead, perform an operating system

 

 

shutdown.

 

 

NOTE: The power button can also be used to wake the system or to

 

 

place it into a power-saving state (see Power Management Options in

 

 

Windows XP).

11

power light

The power light illuminates and blinks or remains solid to indicate

 

 

different states:

 

 

¡ No light — The computer is turned off.

 

 

¡ Steady green — The computer is in a normal operating

 

 

state.

 

 

¡ Blinking green — The computer is in a power-saving state.

 

 

¡ Steady amber — There may be a problem with an

 

 

installed device.

 

 

¡ Blinking amber — An internal power problem may exist.

 

 

 

12

computer stand

Attach the computer stand to provide stability to the system.

 

 

CAUTION: The computer stand should be installed at all times

 

 

to ensure maximum system stability. Failure to install the

 

 

stand could result in the computer tipping over, potentially

 

 

resulting in bodily injury or damage to the computer.

 

 

 

Front I/O Connectors

1

microphone

Use the microphone connector to attach a personal computer microphone

 

connector

for voice or musical input into a sound or telephony program.

 

 

 

2

headphone

Use the headphone connector to attach headphones.

 

connector

 

 

 

 

3

diagnostic

Use the sequence of these diagnostics lights to help troubleshoot a

 

lights (4)

problem with your computer (see Dell Diagnostics).

 

 

 

4

hard-drive

The hard drive light is on when the computer reads data from or writes

 

activity light

data to the hard drive. The light may also be on when a device such as

 

 

your CD player is operating.

 

 

 

5

network link

The network link light is on when a good connection exists between a

 

light

network and the computer.

 

 

 

6

USB 2.0

Use the front USB connectors for devices that you connect occasionally,

 

connectors (2)

such as flash memory keys, cameras, or bootable USB devices. For more

 

 

information on bootable USB devices see Boot Sequence.

 

 

Dell recommends that you use the back USB connectors for devices that

 

 

typically remain connected, such as printers and keyboards.

 

 

 

7

IEEE 1394

Use the IEEE 1394 connector for high-speed data devices such as digital

 

connector

video cameras and external storage devices.

 

 

 

Back View

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Image 82
Dell 720H2C appendix Front I/O Connectors, Back View, To ensure maximum system stability. Failure to install