Dell Precision 490 Desktop Quick Reference Guide - Page 22
Back Panel Connectors, User's Guide - windows 7
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Back Panel Connectors 1 2 3 4 56 11 10 9 8 7 1 parallel connector 2 line-out/ headphone connector 3 PS/2 mouse connector 4 link integrity light 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 your User's Guide. Use the green line-out connector to attach headphones and most speakers with integrated amplifiers. On computers with a sound card, use the connector on the card. 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® XP operating system, the necessary mouse drivers have been installed on your hard drive. • 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 1000-Mbps (or 1-Gbps) network and the computer. • Off - The computer is not detecting a physical connection to the network. 22 Quick Reference Guide