Dell 450 warranty Inside Your Computer

1	parallel connector	Connect a parallel device, such as a printer, to the parallel connector. If you have a USB printer, plug it into a USB connector.
		NOTE: The integrated parallel connector is automatically disabled if the computer detects an installed card containing a parallel
		connector configured to the same address. For more information, see "System Setup Options."
2	line-out connector	Use the green line-out connector (available on computers with integrated sound) to attach headphones and speakers).
		On computers with a sound card, use the connector on the card.
3	line-in connector	Use the blue line-in connector (available on computers with integrated sound) to attach a record/playback device such as a cassette
		player, CD player, or VCR.
		On computers with a sound card, use the connector on the card.
4	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.
		If your computer is running the Microsoft® Windows® 2000 or Windows XP operating system, the necessary mouse drivers have
		been installed on your hard drive.
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 connection exists between a 1-Gbps (or 1000-Mbps) connection.
		• Off — The computer is not detecting a physical connection to the network.
6	network connector	Attach the UTP cable to an RJ45 jack wall plate or to an RJ45 port on a UTP concentrator or hub and press the other end of the UTP
		cable into the network connector until the cable snaps securely into place.
		The use of Category 5 wiring and connectors is recommended for our customers' networks. If Category 3 wiring must be used, force
		the network speed to 10 Mbps to ensure reliable operation.
		On computers with a network connector card, use the connector on the card.
7	network activity	Flashes a yellow light when the computer is transmitting or receiving network data. A high volume of network traffic may make this
	light	light appear to be in a steady "on" state.
8	USB 2.0	Use the back USB connectors for devices that typically remain connected, such as printers and keyboards.
	connectors (2)
		It is recommended that you use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras.
9	IEEE 1394	Attach high-speed serial multimedia devices.
	connector
10	USB 2.0	Use the back USB connectors for devices that typically remain connected, such as printers and keyboards.
	connectors (2)
		It is recommended that you use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras.
11	keyboard	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	connector.
12	microphone	Use the pink microphone connector (available on computers with integrated sound) to attach a personal computer microphone for
	connector	voice or musical input into a sound or telephony program.
		On computers with a sound card, use the microphone connector on the card.
13	serial connector	Connect a serial device, such as a handheld device, to the serial port. The default designations are COM1 for serial connector 1 and
	(COM 2)	COM2 for serial connector 2.
		For more information, see "System Setup Options."
14	serial connector	Connect a serial device, such as a handheld device, to the serial port. The default designations are COM1 for serial connector 1 and
	(COM 1)	COM2 for serial connector 2.
		For more information, see "System Setup Options."

Inside Your Computer

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.

CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before opening the cover.