The hard-drive light is on when the computer reads data from or writes data to the hard drive. The light might also be on when a device such as your CD player is operating.
2
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.
3
drive door
Open the drive door to access the floppy and CD/DVD drives.
4
front-panel door
Open the door to use the front-panel connectors.
NOTE: The front door is removable; if you remove it or accidentally knock it off its hinges, it snaps back in place. For more information on removing the door, see your Owner's Manual.
Front View (Door Open)
1
headphone connector
Use the headphone connector to attach headphones and most kinds of speakers.
2
microphone connector
Use the microphone connector to attach a personal computer microphone for voice or musical input into a sound or telephony program.
3
USB 2.0 connectors (2)
Use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras.
It is recommended that you use the back USB connectors for devices that typically remain connected, such as printers and keyboards.
4
IEEE 1394 connector
Use the IEEE 1394 connector to attach high-speed serial multimedia devices, such as digital video cameras.
5
diagnostic lights (4)
Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic Lights."
Back View
1
processor fans (2)
For optimal cooling, two processor fans are provided. Do not block the vents.
2
cover latch release
To open the computer, lay the computer on its side with the cover latch release at the top and then push the latch to the left. See "Opening the Computer Cover."
3
security cable slot
Use a security cable with the slot to help secure your computer.
4
padlock ring
Insert a padlock to lock the computer cover.
5
power connector
Insert the power cable.
6
power supply fans
For optimal cooling, two power supply fans are provided. Do not block the vents.
7
card slots (6)
Access connectors for optional video, audio, modem, or other PCI cards (three slots) and PCI Express cards (two x16 slots and one x1 slot).
NOTE: If a graphics card is installed in each of the PCI Express x16 card slots in the dual-graphics configuration, the PCI Express x1 card slot is not available for use.
8
back panel connectors
Plug USB, audio, and other devices into the appropriate connector.
1
mouse connector
Plug a standard mouse into the green mouse connector. Turn off the computer and any attached devices before you connect a mouse to the computer. If you have a USB mouse, plug it into a USB connector.
2
surround connector
Use the black surround connector to attach multichannel-capable speakers.
3
line-out connector
Use the green line-out connector (available on computers with integrated sound) to attach headphones and most speakers with integrated amplifiers.
On computers with a sound card, use the connector on the card.
4
line-in connector / side-surround
Use the blue and silver connector to attach a record/playback device such as a cassette player, CD player, or VCR, or to provide enhanced surround audio for computers with 7.1 speakers.
On computers with a sound card, use the connector on the card.
5
link integrity light
Green — A good connection exists between a 10-Mbps network and the computer.
Orange — A good connection exists between a 100-Mbps network and the computer.
Yellow — A good network connection exists between a 1000-Mbps network and the computer.
Off — The computer is not detecting a physical connection to the network.
6
network adapter connector
To attach your computer to a network or broadband device, connect one end of a network cable to either a network jack or your network or broadband device. Connect the other end of the network cable to the network adapter connector on the back panel of your computer. A click indicates that the network cable has been securely attached.
NOTE: Do not plug a telephone cable into the network connector.
On computers with a network connector card, use the connector on the card.
7
network activity light
Flashes a yellow light when the computer is transmitting or receiving network data. A high volume of network traffic may make this light appear to be in a steady "on" state.
8
USB 2.0 connectors (6)
Use the back USB connectors for devices that typically remain connected, such as printers and keyboards.
It is recommended that you use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras.
9
microphone connector
Use the pink connector to attach a personal computer microphone for voice or musical input into a sound or telephony program.
On computers with a sound card, the microphone connector is on the card.
10
center/subwoofer connector
Use the yellow connector to attach a speaker to a Low Frequency Effects (LFE) audio channel.
11
IEEE 1394 connector
Use the IEEE 1394 connector to attach high-speed serial multimedia devices, such as digital video cameras.
12
keyboard connector
If you have a standard keyboard, plug it into the purple keyboard connector. If you have a USB keyboard, plug it into a USB connector.
13
serial connector
Connect a serial device, such as a handheld device, to the serial port.
