Dell Precision R5400 Setup and Quick Reference Guide  - Page 24

Controls and Lights, Specifications, To avoid losing data, do not turn off

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Page 24 highlights

Controls and Lights Front panel: Power button push button - Press the power button to turn on the computer. NOTICE: To avoid losing data, do not turn off the computer by pressing the power button. Instead, perform an operating system shutdown. Power light green light - Blinking green in sleep state; solid green in normal power-on state. amber light - Blinking amber indicates that an internal power problem may exist; solid amber indicates that a device may be malfunctioning or incorrectly installed (see "Power Problems" on page 45). Network activity lights (2) green blinking light - Flashes when the computer is transmitting or receiving network data. A high volume of network traffic may make this light appear to be in a steady on state. Hard drive activity light green light - The hard drive activity light is on when the computer reads data from or writes data to the hard drive. The light may also be on when a device such as an optical drive is in operation. 24 Specifications

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24
Specifications
Controls and Lights
Front panel:
Power button
push button — Press the power button to turn on the
computer.
NOTICE:
To avoid losing data, do not turn off the
computer by pressing the power button. Instead,
perform an operating system shutdown.
Power light
green light — Blinking green in sleep state; solid
green in normal power-on state.
amber light — Blinking amber indicates that an
internal power problem may exist; solid amber
indicates that a device may be malfunctioning or
incorrectly installed (see "Power Problems" on
page 45).
Network activity lights (2)
green blinking light
—
Flashes when the computer is
transmitting or receiving network data. A high
volume of network traffic may make this light appear
to be in a steady
on
state.
Hard drive activity light
green light — The hard drive activity light is on when
the computer reads data from or writes data to the
hard drive. The light may also be on when a device
such as an optical drive is in operation.