Dell GX280DT - GX280 Desktop Computer User Manual page 195

connectors such as printers and keyboards.
(6)
It is recommended that you use the front USB connectors for devices
that you connect occasionally, such as joysticks or cameras, or for
bootable USB devices.
9 diagnostic Use the lights to help you troubleshoot a computer problem based on
lights the diagnostic code. For more information, see
10 video Plug the cable from your VGA-compatible monitor into the blue connector.
connector
NOTE: If you purchased an optional graphics card, this connector will be
covered by a cap. Connect your monitor to the connector on the graphics
card. Do not remove the cap.
NOTE: If you are using a graphics card that supports dual monitors, use
the y-cable that came with your computer.
11 parallel Connect a parallel device, such as a printer, to the parallel connector. If
connector 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."
Inside Your Computer
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: Be careful when opening the computer cover to ensure that you do not accidentally disconnect cables from the system board.
1 hard drive 6 system board
2 floppy drive 7 power supply
3 CD/DVD drive 8 padlock ring
4 internal speaker 9 heat sink and blower assembly
5 chassis intrusion switch
System Board Components
"Diagnostic Lights."