Dell Precision 490 Desktop - Manual (Page 22)

22
Quick Reference Guide
Back Panel Connectors
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 your User’s Guide.
2 line-out/ headphone
connector 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.
3 PS/2 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
®
XP operating system,
the necessary mouse drivers have been installed on your hard drive.
4 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 1000-Mbps (or 1-Gbps) network
and the computer.
• Off — The computer is not detecting a physical connection to the network.
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