Dell Precision T5400 (Late 2007) User Manual
Page 41
About Your Computer
41
Power light
Front panel:
green light—blinking green in sleep state;
solid green for power-on state
amber light—blinking amber indicates that
an internal power problem might exist; solid
amber indicates that a device may be
malfunctioning or incorrectly installed (see
Hard-drive access light
Front panel: green light - 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 the optical drive is operating.
Network integrity lights
Back panel: green light for 10-Mb operation;
orange light for 100-Mb operation; yellow
light for a 1000-Mb (1-Gb) operation
Front panel: displays solid green when a
network connection is present.
Activity light
Back panel: yellow blinking light when there
is network activity.
Diagnostic lights
Front panel: four lights (see "Diagnostic
Standby power light
AUX_PWR on the system board
Power
DC power supply
Wattage
875 W
Heat dissipation
1094W or 3732BTU/hour
NOTE:
Heat dissipation is calculated
based upon the power supply wattage
rating.
Voltage
auto-sensing power supply—90 V to 265 V
at 50/60 Hz
Backup battery
3-V CR2032 lithium coin cell
Controls and Lights