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System Board Connectors
Small Form Factorone 5-pin connector
Password clear jumperone 3-pin connector
RTC reset jumperone 3-pin connector
Internal speakerone 5-pin connector
Intruder connectorone 3-pin connector
Power connectorone 24-pin and one 4-pin connector
Controls and Lights
Front of the computer:
Power button lightBlue light — Solid blue light
indicates power-on state; blinking
blue light indicates sleep state of
the computer.
Amber light — Solid amber light
when the computer does not start
indicates a problem with the
system board or power supply.
Blinking amber light indicates a
problem with the system board.
Drive activity lightBlue light — Blinking blue light
indicates that the computer is
reading data from or writing data to
the hard drive.
Diagnostic lightsFour lights located on the front
panel of the computer. For more
information on the diagnostic lights,
see the Service Manual at
support.dell.com/manuals.
Back of the computer:
Power supply diagnostic lightGreen light — The power supply is
turned on and is functional. The
power cable must be connected to
the power connector (at the back
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