Dell Precision 690 Quick Reference Guide - Page 19
Back Panel Connectors, address. For more information, see your - memory configuration
UPC - 683728231804
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Back Panel Connectors 1 2 3 4 5 6 7 13 12 11 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 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. Quick Reference Guide 19