Dell GX520 Back-Panel Connectors, Parallel connector, USB printer, plug it into a USB connector

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4	voltage selection switch	Your computer is equipped with a manual voltage-selection switch.
		To avoid damaging a computer with a manual voltage-selection switch, set the
		switch to the voltage that most closely matches the AC power available in your
		location.
		NOTICE: In Japan, the voltage selection switch must be set to 115-V.
		Also, ensure that your monitor and attached devices are electrically rated to
		operate with the AC power available in your location.
5	padlock ring	Insert a padlock to lock the computer cover.
6	cover release latch	Use this latch to open the computer cover.

Back-Panel Connectors

1	2	3	4
			5
			6
			7

		10	9	8
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" in your online User’s
		Guide.
2	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) network and the computer.

•Off — The computer is not detecting a physical connection to the network.

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Quick Reference Guide