Dell Precision 390 - Manual (Page 33)

Video VGA or DVI connector on graphic card
Network adapter RJ45 connector
PS/2 (keyboard and mouse) two 6-pin mini-DIN
USB two front-panel, one internal, and five back-panel
USB 2.0–compliant connectors
Audio two rear connectors for line-in and line-out; two
front-panel connectors for headphones and
microphone
System board connectors:
Primary IDE drive 40-pin connector on PCI local bus
Serial ATA (4) 7-pin connector
Key Combinations
<Ctrl><Alt><Del> launches the task manager
<F2> starts embedded system setup (during start-up only)
<F12> or <Ctrl><Alt><F8> boots from the network (during start-up only)
<Ctrl><Alt><F10> launches the utility partition (if installed) during
computer start-up
<Ctrl><Alt><d> launches the hard-drive diagnostics utility during
computer start-up
Controls and Lights
Power control push button
Power light green light — blinking green in sleep state; solid
green for power-on state
amber light — solid amber indicates a problem with
an installed device; blinking amber indicates an
internal power problem (see
Power Problems )
Hard-drive access light green
Link integrity light (on integrated network adapter
and on front panel) on back panel integrated network adapter: green
light for 10-Mb operation; orange light for 100-Mb
operation; yellow light for a 1000-Mb (1-Gb)
operation
on front panel: displays solid green when a network
connection is present
Activity light (on integrated network adapter) yellow blinking light when there is network activity
Diagnostic lights four lights on the front panel (see Diagnostic Lights )
Standby power light AUXPWR on the system board
Power
DC power supply:
Wattage 375 W
Heat dissipation 1280 BTU/hr.
NOTE: Heat dissipation is calculated based upon the
power supply wattage rating.
Voltage manual selection power supplies—90 to 135 V at
50/60 Hz; 180 to 265 V at 50/60 Hz
Backup battery 3-V CR2032 lithium coin cell
Physical
Height 44.8 cm (17.6 inches)
Width 17.1 cm (6.8 inches)
Depth 46.7 cm (18.4 inches)
Weight 17.7 kg (39 lb)
Supported monitor weight (in desktop
orientation) 45.4 kg (100 lb)