Dell Precision NT499 User Manual page 36

Power
DC power supply:
Wattage
Heat dissipation
Voltage
Backup battery
Physical
Height
Width
Depth
Weight
Supported monitor weight (in
desktop orientation)
Environmental
Temperature:
Operating
Storage
Relative humidity
Maximum vibration:
Operating
Storage
36
About Your Computer
375/525 W
375-W PSU: 1279 BTU/hr
525-W PSU: 1790 BTU/hr
NOTE:
Heat dissipation is calculated based
upon the power supply wattage rating.
manual selection power supplies—90 to
135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz
3-V CR2032 lithium coin cell
44.8 cm (17.6 inches)
17.1 cm (6.8 inches)
46.7 cm (18.4 inches)
17.7 kg (39 lb)
45.4 kg (100 lb)
10° to 35°C (50° to 95°F)
–40° to 65°C (–40° to 149°F)
20% to 80% (noncondensing)
0.25 G at 3 to 200 Hz at 0.5 octave/min
0.5 G at 3 to 200 Hz at 1 octave/min