Dell Precision D490, Quick Reference Manual, Page: 19 / 124

Quick Reference Guide
19
Back Panel Connectors
1 2 3 4 6
13 12 11 10 8 9
5 7
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 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 USB 2.0 connectors (3) It is recommended that you use the front USB connectors for devices that you
connect occasionally, such as flash memory keys, cameras, or bootable USB
devices.
Use the back USB connectors for devices that typically remain connected, such as
printers and keyboards.